Heskett, James L., author
Tian Xia Wen Hua, 1987
Buku Teks
Fitzsimmons, James A., author
2004
Multimedia
Lovelock, Christopher H., author
Prentice-Hall, 1992
Buku Teks
Joseph, William, author
McGraw-Hill, 1983
Buku Teks
Fitzsimmons, James A., author
[Publisher not identified], 2004
Multimedia