Chang, Richard Y., author
PPM, 2001
Buku Teks
Chang, Richard Y., author
Pustaka Binaman Pressindo , 1998
Buku Referensi
Maddux, Robert B., author
Erlangga, 2001
Buku Teks
Kurnia Wirasari , author
Fakultas Psikologi Universitas Indonesia, 2005
UI - Tesis (Membership)
Kotter, John P., 1947-, author
Prenhallindo, 1997
Buku Teks