edited by Max Rosenbaum
Free Press, 1982
Buku Teks
Reamer, Frederic G.
Columbia University Press, 1999
Buku Teks
Duncan, Peter
Sage, 2014
Buku Teks
Fisher, Colin
Pearson Education, 2013
Buku Teks
Welfel, Elizabeth Reynolds
Brooks/Cole Cengage Learning, 2013
Buku Teks