Carter, Irl, author
AldineTransaction, 2011
Buku Teks
Elster, Jon, author
Cambridge University Press, 2015
eBooks
The Dushkin Publishing Group, Inc., 1992
Buku Teks
Wormer, Katherine Stuart van, author
Oxford University Press, 2017
Buku Teks
Zastrow, Charles, author
Nelson-Hall Publishers, 1989
Buku Teks