Chaousis, Linda, author
Prentice-Hall, 200
Buku Teks
Robbins, Stephen P., author
Prentice-Hall, 1990
Buku Teks
Robbins, Stephen P., author
Prentice-Hall, 1990
Buku Teks
Annisaa Khairina Prima, author
Fakultas Psikologi Universitas Indonesia, 2014
UI - Skripsi (Membership)
Tyson, Shaum, author
Prentice-Hall, 2000
Buku Teks