Jansson, Bruce S., author
Brooks/Cole; cengage learning, 2009
Buku Teks
Yang Lijuan, Shan Wei
World Scientific, 2017
Buku Teks
Cornel University Press, 1993
Buku Teks
edited by Amal Kumar Mukhopadhyay
Council for Political Studies, 1974
Buku Teks
Sampson, Edward G., author
John Wiley & Sons, 1976
Buku Teks