Weiten, Wayne
Cengage Learning, 2018
Buku Teks SO
Weiten, Wayne
Delmar Cengage Learning, 2015
Buku Teks SO
Gilmer, B. von Haller (Beverly von Haller), 1909-1994
Tata McGraw-Hill, 1994
Buku Teks
edited by Gun R. Semin, Klaus Fiedler
Sage, 1996
Buku Teks
North, Adrian C.
Oxford, 2008
Buku Teks