原忠之
Hara, T., Iwamoto, H., (2014) “Tourism Management Policy Proposals for UNESCO World Heritage:Empirical Study on Perception of Tour Guides in Shirakami Mountain Range, Japan” Journal of Tourism Economics, Policy and Hospitality Management Vol. 2: Iss. 1, Article 1 (http://tourismresearch.econo.yamaguchi-u.ac.jp/jtephm/vol2/iss1/1/)
Hara, T (2014) “Perception of Language Barriers or Prior Visit Experience Affect Likelihood of Visiting a Country? Empirical Analysis of Resident in the United States of America about Japan as Tourism Destination” Waseda Global Forum, Vol. 10, pp391-407 ISSN 1349-7766, Tokyo, Japan