Plutchik, Robert
Harper & Row , 1983
Buku Teks
McGuigan, F.J. (Frank J.), 1924-
Prentice-Hall, 1990
Buku Teks
RAy, William J.
Wadsworth, 1985
Buku Teks
Solso, Robert L., 1933-, author
Boston, 2002
Buku Teks
Leach, John, 1953-
Philadelphia Open University Press 1991,
Buku Teks