Luft, Joseph, author
National Press Books, 1970
Buku Teks
Luft, Joseph, author
Mayfield Publishing Company, 1984
Buku Teks
edited by Jonathon Gillette and Marion McCollom
Addison-Wesley, 1990
Buku Teks
Shaw, Marvin E., author
New York, 1981
Buku Teks
Hartley, Peter, 1946-, author
Routledge, 1997
Buku Teks