Ford, Robert C., author
Sage, 2020
Buku Teks
Aikens, C. Harold, author
Pearson/Prentice Hall, 2006
Buku Teks
Kuczmarski, Thomas D., author
Prentice-Hall, 1988
Buku Teks
Hickman, Craig R., author
New American Library, 1984
Buku Teks
edited by Terry Hanson
Facet Publishing, 2005
Buku Teks