Bethel, Sheila Murray
Binarupa Aksara, 1994
Buku Teks
Pambudi Sunarjiharto, author
Kaifa, 2018
Buku Teks
Siti Ismah Afwan, author
Fakultas Psikologi Universitas Indonesia, 1995
UI - Tesis (Membership)
Parkinson, Cyril Northcote, 1909-1993, author
Pustaka Binaman Pressindo, 1983
Buku Teks
Livia Iskandar, author
Fakultas Psikologi Universitas Indonesia, 1994
UI - Skripsi Membership