Cox, Kevin R.
Blackwell, 2002
Buku Teks
Delaney, David, author
Blackwell Publishing, 2005
Buku Teks
Storey, David, author
Pearson/Prentice Hall, 2001
Buku Teks
Elden, Stuart, author
University of Minnesota Press, 2009
Buku Teks
Hilman Rizaldi Ruswin, author
Fakultas Psikologi Universitas Indonesia, 2017
UI - Skripsi (Membership)