Huseman, Richard C., author
Allyn and Bacon, 1977
Buku Teks
Margulies, Newton, author
McGraw-Hill, 1978
Buku Teks
University of Pittsburgh Press, 1980
Buku Teks
edited by Allan Cochrane, Chris Hamnett and Linda McDowell
Harper and Row, 1981
Buku Teks
AVI Publishing Company, 1984
Buku Teks