edited by Kathleen J. Bieschke, Ruperto M. Perez, Kurt A. DeBord
American Psychological Association, 2007
Buku Referensi
Keitel, Merle A., author
Sage, 2000
Buku Teks
Anwar Faesol, author
Fakultas Teknik Universitas Indonesia, 2002
UI - Skripsi (Membership)
Andyan Pradipto, author
Fakultas Teknik Universitas Indonesia, 2004
UI - Skripsi (Membership)
edited by Cary L. Cooper, James Campbell Quick, Marc J. Schabracq
John Wiley & Sons, 2009
Buku Teks