edited by Pieter J.D. Drenth, Henk Thierry, Charles J. de Wolff
Routledge, 1998
Buku Referensi
Suryaningtyas Tri Hapsari, author
Universitas Indonesia, 2006
UI - Tesis (Membership)
edited by Pieter J.D. Drenth, Henk Thierry, Charles J. de Wolff
Psychology Press, 1998
Buku Referensi
Jewell, L.N., author
Arcan, 1998
Buku Teks
Menninger, William C., author
Science Research Associates , 1958
Buku Teks