Juszli, Frank L., author
Prentice-Hall, 1969
Buku Teks
Ewen, Dale, author
Thomson Brooks/Cole, 2007
Buku Teks
Connelly, James F., author
Macmillan, 1978
Buku Teks
Schaaf, William L., author
Wiley-Academy, 1965
Buku Teks
Devine, Donald F., author
John Wiley & Sons, 1977
Buku Teks