Nevid, Jeffrey S.
Pearson Education International, 2008
Buku Teks
Westview Press, 1978
Buku Teks
Edited, Dorojatun Kuntjoro-Jakti; Keiji Omura
Institute of Developing Economies, 1995
Buku Teks
Yayasan Proklamasi, [date of publication not identified]
Buku Teks
Kornblum, William, author
Wadsworth and Cengage Learning, 2012
Buku Teks