Lazarus, Harold, author
Philosophical Library, 1957
Buku Teks
Lazarus, Harold, author
Prentice-Hall, 1968
Buku Teks
West, Morris, author
Mandarin, 1990
Buku Teks
Schnee, Jerome E.
Prentice-Hall, 1977
Buku Teks
Collin, P. H., author
Peter Collin Publishing, 2001
Buku Teks