Fakultas Psikologi Universitas Indonesia, 1982
UI - Skripsi (Membership)
edited by Linda L. Sperry and Patricia A. Smiley
Jossey-Bass, 1995
Buku Teks
Nur Azizah, author
Fakultas Psikologi Universitas Indonesia, 2019
UI - Skripsi (Membership)
by William H. Fitts ... [and others]
Western Psychological Services, 1971
Buku Teks
Rizki Maisura, author
Fakultas Psikologi Universitas Indonesia, 2009
UI - Skripsi (Open)