Johnson, LouAnne, author
Jossey-Bass, 2011
Buku Teks
Mursell, James L.
UI-Press, 1975
Buku Teks
Moore, Kenneth D.
Random House , 1989
Buku Teks
Friedl, Alfred E, author
McGraw-Hill, 2001
Buku Teks
edited by David G. Mandelbaum, Gabriel W. Lasker, Ethel M. Albert
University of California Press, 1963
Buku Teks