Shaffel, Fannie R., author
Prentice-Hall, 1967
Buku Teks
Barnes, Donald L., author
Burgess, 1969
Buku Teks
Yulia Praptiwi, author
Universitas Indonesia, 2014
UI - Skripsi (Membership)
Richardson, Scott, author
[, Sense], 2012
eBooks
Levin, Jack, author
Harper & Row, 1973
Buku Teks