Feher, Kamilo, author
Prentice-Hall, 1981
Buku Teks
Nashelsky, Louis, author
John Wiley & Sons, 1977
Buku Teks
Cave, Frank E., author
Reston Publishing, 1981
Buku Teks
O`Connor, Patrick J., author
Prentice-Hall, 1983
Buku Teks
McGlynn, Daniel R., author
John Wiley & Sons, 1976
Buku Teks