http://owl.english.purdue.edu/owl/resource/560/09/ Purdue OWL: Work Discussed in a Secondary Source (APA) accessed online http://owl.english.purdue.edu/owl/resource/560/09/ Reference List: Other Print Sources https://owl.english.purdue.edu/owl/resource/560/09/ Other Print Sources APA style Reference List: Other Print Sources Reference List: Other Print Sources Other print sources APA style Reference List (other print sources) Reference list: other print sources. Reference List (other print sources) Purdue Online Writing Lab: An Entry in an Encyclopedia How do I cite a secondary source? APA style APA style APA style APA style APA style accessed online Purdue OWL