Kelly, Caroline
Caroline Kelly, 1996
Buku Teks
PaPiere, Richard T.
McGraw-Hill Book Company, Inc., 1938
Buku Teks
Yunita Faela Nisa, author
1999
UI - Skripsi (Membership)
Rabi`atul Aprianti, author
Fakultas Psikologi Universitas Indonesia, 2017
UI - Tesis (Membership)
The Free Press, 1972
Buku Teks