Holman, J.P. (Jack Philip), author
McGraw-Hill, 1997
Buku Referensi
Fitzgerald, A.E. (Arthur Eugene), 1909-, author
McGraw-Hill, 1983
Buku Teks
Lamont, Douglas, author
Blackwell Publishers, 1996
Buku Referensi
Brady, James E., author
John Wiley & Sons, 1981
Buku Teks
Holzberlein, Deanne, author
The Haworth Press, Inc., 1986
Buku Teks