Shank, Patti
American Management Association, 2009
eBooks
editor, Dirk Ifenthaler, Deniz Eseryel, Xun Ge
Springer, 2012
eBooks
Fakultas Psikologi Universitas Indonesia, 1991
UI - Skripsi (Membership)
Ruly Agivianna
Fakultas Psikologi Universitas Indonesia, 1987
UI - Skripsi (Membership)
Pintner, Rudolf, 1884-1942
Henry Holt and Company, [1927]
Buku Teks