edited by Jonathon Gillette and Marion McCollom
Addison-Wesley, 1990
Buku Teks
Luft, Joseph, author
National Press Books, 1970
Buku Teks
Luft, Joseph, author
Mayfield Publishing Company, 1984
Buku Teks
Shaw, Marvin E., author
New York, 1981
Buku Teks
edited by Graham S. Gibbard, John J. Hartman, Richard D. Mann
Jossey-Bass, 1976
Buku Teks