Relly, Dorothy, author
EGC , 2002
Buku Teks
Amir Hamzah Suleiman, author
Gramedia, 1985
Buku Teks
Fakultas Psikologi Universitas Indonesia, 2005
UI - Tesis (Membership)
M. cay Holbrook dan Alan J. Koenig, editor
Helen Keller International, 2013
Buku Teks
Amir Hamzah Suleiman
Gramedia, 1981
Buku Teks