by adapting a framework previously presented by Carter & Rogers (2008). In Section 5, the use of theoretical lenses in SRS research is discussed before the paper concludes with Section 6. 2. Method The systematic literature review methodology, as described by authors such as Tranfield et al. (2003) and Denyer & Tranfield (2009) has been used to construct a database of articles, which were evaluated in order to provide insight into our research questions. This systematic process of reviewing literature increases rigour by promoting replicability and reliability and by decreasing bias (); but more importantly it makes the process transparent (). In the following section we discuss the different stages that were followed while conducting the systematic literature review, as summarised in Figure 1 below. <Take in Figure 1> 2.1 The Systematic Literature Review Protocol In the stage of the review, a search was conducted in the abstract field of the ABI/INFORM database for the following combination of keywords: ‘Socially responsible’ and ‘Sourcing / Procurement / Purchasing’; ‘Ethical’ and ‘Sourcing / Procurement / Purchasing’; ‘Sustainable’ and ‘Sourcing / Procurement / Purchasing’; ‘Social responsibility / Corporate social responsibility / Triple bottom line’ and ‘Supply chain’; ‘Social’ and ‘Supply chain’ and ‘Sustainability’. Only peer reviewed articles from scholarly journals published between 1997 till April 2013 were selected, resulting in a total of 631 relevant articles. In the second stage, the duplicated results were eliminated, reducing the total number of articles to 485. According to Denyer & Tranfield (), in a systematic review it is required to set relevance and quality selection criteria. Therefore, in the third stage the abstracts of these 485 articles were read carefully and only those articles that discussed the social dimension within socially responsible sourcing and published in journals that are part of the ABS Academic Journal Quality Guide 2010 were selected. A large number of articles dealing exclusively with environmental issues were excluded. However, broader literature which considers all three dimensions of the TBL are included as well as those that consider the social dimension alone. This procedure resulted in a short-list of 120 relevant articles. Two of the authors were involved in this stage, since the decisions regarding
Appendix: Summary of Research Themes in all Papers Reviewed (* based on primary data) Author(s) Performance Strategy Organisational culture Transparency Risk management Developing economies Supplier's perspective Relationship between practices and performance Sustainability measures / indicators Ethical standards Codes of conduct Reporting perspective 1 Ageron et al. (2012) * X 2 Amaeshi et al. (2008) X 3 Andersen & Skjoett-Larsen (2009) * X 4 Andrews et al. (2009) * X 5 Awaysheh & Klassen (2010) * X X X 6 Baden et al. (2009) * X X 7 Baden et al. (2011) * X X 8 Bai & Sarkis (2010) 9 Becker et al. (2010) X X 10 Belal (2002) X 11 Beske et al. (2008) * X X X 12 Birkin et al. (2009) * X X X 13 Boyd et al. (2007) X 14 Brammer & Walker (2011) * X 15 Burchielli et al. (2009) * X X X 16 Carbone et al. (2012) X 17 Carter & Easton (2011) X 18 Carter & Jennings (2002a) * X X X 19 Carter & Jennings (2002b) *
20 Carter & Jennings (2004) * X X 21 Carter & Rogers (2008) X X 22 Carter (2000a) * X X 23 Carter (2000b) * X X 24 Carter (2004) * X 25 Castka & Balzarova (2008a) X 26 Castka & Balzarova (2008b) X 27 Ciliberti et al. * X X X 28 Ciliberti et al. (2008b) X X 29 Ciliberti et al. (2009) * X 30 Collison et al. (2008) X 31 Colwell et al. (2011) * X 32 Cooper et al. (1997) * X 33 Cooper et al. (2000) * X X 34 Crespin-Mazet & Dontenwill (2012) * X 35 De Bakker & Nijhof (2002) X 36 De Brito et al. (2008) * X 37 Eadie et al. (2011) * X 38 Ehrgott et al. (2011) * X 39 Eltantawy et al. (2009) * X X 40 Erridge & Hennigan (2012) * X 41 Fassin (2008) * X 42 Font et al. (2008)* X X X 43 Forsman-Hugg et al. (2013) * X 44 Fukukawa & Teramoto (2009) * X 45 Gimenez & Tachizawa (2012) X X X X 46 Gimenez et al. (2012) * X 47 Goebel et al. (2012) * X 48 Gopalakrishnan et al. (2012) * X 49 Graafland (2002) * X X X X 50 Gugler & Shi (2009) X X 51 Hall & Matos (2010) * X 52 Hall et al. (2012) * X 53 Harwood & Humby (2008) * X X X
54 Harwood et al. (2011) * X 55 Hoejmose & (2012) X X 56 Hollos et al. (2011) * X 57 Holt (2004) * X 58 Hutchins & Sutherland (2008) X 59 Illge & Preuss (2012) * X X 60 Isaksson et al. (2010) X X 61 Jiang (2009a) * X X X X 62 Jiang (2009b) * X X X X 63 Joo et al. (2010) X 64 Jorgensen & Knudsen (2006) * X X 65 Kaptein (2004) X 66 Keating et al. (2008) * X X 67 Ketola (2010) X X 68 Klassen & Vereecke (2012) * X X X X 69 Kleindorfer et al. (2005) 70 Kogg & Mont (2012) * X X 71 Kolk & Tulder (2002a) X X 72 Kolk & Tulder (2002b) X 73 Kolk & Tulder (2004) X X 74 Kolk (2012) * X 75 Koplin et al. (2007) * X X 76 Kortelainen (2008) * X X X 77 Krause et al. (2009) X 78 Krueger (2008) X X 79 Kudla & Klaas-Wissing (2012) * X X X 80 Lamberti & Lettieri (2009) * X 81 Lee & Kim (2009) * X X X X 82 Lehtinen (2012) * 83 Leire & Mont (2010) * X 84 Lillywhite (2007) * X X X
85 Lim & Phillips (2008) * X X X X 86 Lozano & Huisingh (2011) * X 87 Luken & Stares (2005) * X X X X 88 MacCarthy & Jayarathne (2012) * X X X X 89 Maignan et al. (2002) X X 90 Maloni & Brown (2006) X 91 Mamic (2005) * X X X 92 Manning (2013) X 93 Manning et al. (2006) X 94 Markley & Davis (2007) X 95 Meehan & (2011) * X 96 Mueller et al. (2009) X X 97 New (1997) X 98 Nikoloyuk et al. (2010) * X 99 et al. (2013) * X 100 Oruezabalaa & Rico (2012) * X 101 Pagell & Wu (2009) * X 102 Pagell et al. (2010) * X 103 Panapanaan et al. (2003) * 104 Park (2005) * X 105 Park-Poaps & Rees (2010) * X 106 Pedersen (2009) * X X 107 Perez-Aleman & Sandilands (2008) * X X X 108 Polonsky & Jevons (2009) X 109 Pretious & Love (2006) * X X 110 Preuss & Walker (2011) X 111 Preuss (2007) * X X 112 Preuss (2009a) * X X 113 Preuss (2009b) X X 114 Prieto-carrón (2008) X 115 Pullman & Dillard (2010) * X X 116 Reuter et al. (2010) *
117 Reuter et al. (2012) * X 118 Rimmington et al. (2006) * 119 Roberts (2003) X 120 Robinson (2010) * X X X 121 Sarkis et al. (2010) X 122 Schneider & Wallenburg (2012) X 123 Seuring & Muller (2008a) 124 Seuring & Muller (2008b) * X 125 Sobczak (2003) X 126 Spekman & Davis (2004) X 127 Spence & Bourlakis (2009) * X X X X X 128 Stigzelius & Mark-Herbert (2009) * X X X 129 Strand (2009) X 130 Svensson & Wagner (2012) * 131 Svensson (2009) * X X 132 Taplin et al. (2006) * X X 133 Tate et al. (2010) X X X 134 Tencati et al. (2008) * X X 135 Teuscher et al. (2006) X X X 136 Tsoi (2010) * X X X 137 Van Hoek & Johnson (2010) * X 138 Van Tulder & Kolk (2001) X 139 Van Tulder et al. (2009) * X 140 Vasileiou & Morris (2006) * 141 Vurro et al. (2009) X 142 Walker & Brammer (2009) * 143 Walker & Brammer (2012) * X 144 Walker & Jones (2012) * X X 145 Walker & Preuss (2008) * X 146 Wang & Sarkis (2013) X 147 Welford & Frost (2006) * X X X X 148 Wiese & Toporowski (2013) * X X
149 Wild & Zhou (2011) * X 150 Winstanley et al. (2002) * X X X X X 151 Winter & Knemeyer (2013) 152 Wittstruck & Teuteberg (2012) * X X 153 Worthington (2009) * X 154 Wu & Pagell (2011) * X 155 Yakovleva et al. (2011) * X 156 Yu (2008) * X X X 157 Zailani et al. (2012) * X X Total 14 8 74 33 32 31 8 8 21 17 12