Cotton, F. Albert, author
1971
UI - Tesis Membership
Forsyth, Donelson R., author
Wadsworth and Cengage Learning, 2014
Buku Teks
Curtis, Charles W., author
John Wiley & Sons, 1981
Buku Teks
Luft, Joseph, author
National Press Books, 1970
Buku Teks
Luft, Joseph, author
Mayfield Publishing Company, 1984
Buku Teks