Dubois, Bernard, author
Prentice-Hall, 2000
Buku Teks
Lawrence Erbaum associates, publisher, 2005
Buku Teks
Ragil Caitra Larasati, author
Fakultas Ekonomi dan Bisnis Unversitas Indonesia, 2016
UI - Skripsi (Membership)
Lawrence Erlbaum Associates, 2005
Buku Teks
Hawkins, Del I., author
McGraw-Hill, Irwin, 2007
Buku Teks