Fakultas Psikologi Universitas Indonesia, 2013
UI - Skripsi (Membership)
Edward E. Smith ... [and others]
Thomson, 2003
Buku Teks
Smith, Edward E., 1940-, author
Wadsworth/Thomson Learning, 2003
Buku Teks
Berelson, Bernard, author
Harcourt Brece & World, 1964
Buku Teks
Daniel, Robert S.
Hoghton Mifflin, 1965
Buku Teks