Jansson, Bruce S., author
Brooks/Cole; cengage learning, 2009
Buku Teks
UNSW
UNSW, 2000
Buku Teks
Junker, Buford H., author
University of Chicago Press, 1960
Buku Teks
edited by Robert K. Merton and Robert A. Nisbet
Harcourt, Brace and World, 1961
Buku Teks
Healy, Karen, author
Sage Publications, 2000
Buku Teks