Li, Rong
Friendship
China Renmin University Press, 2015
eBooks
Lefton, Lester A.
Psychology
Allyn and bacon , 1997
Buku Teks SO
Wortman, Camille B.
Psychology
McGraw-Hill, 1992
Buku Teks SO
Myers, David G.
Psychology
Worth, 1986
Buku Teks SO
Gray, Peter
Psychology
Worth Publishers, 1999
Buku Teks SO