Nash, Robert J., author
Jossey-Bass, 2008
Buku Teks
Cox, Richard J., author
The Haworth Press, 1994
Buku Teks
edited by Robert A. Meyers
Wiley-VCH, 2008
Buku Teks
edited by Robert A. Meyers
Wiley-VCH, 2008
Buku Teks
Albom, Mitch, 1958-, author
HarperCollins, 2013
Buku Teks