Rathus, Spencer A., author
Harcourt Brace College, 1993
Buku Teks
Wortman, Camille B., author
McGraw-Hill, 1999
Buku Teks
Frederick T.L. Leong, Wade E. Pickren, Mark M. Leach, Anthony J. Marsella, editors
[Springer, ], 2012
eBooks
Kendall, Philip C., author
John Wiley & Sons, 1982
Buku Teks
Frost, Nollaig, author
Open University Press, 2011
Buku Teks