Welsh, James R., author
Robert E. Krieger, 1990
Buku Teks
Russel, Peter J., author
Harper Collins, 1994
Buku Teks
Strickberger, Monroe W., author
Macmillan, 1985
Buku Teks
Snustad, D. Peter, 1940-, author
Jonh Wiley & Sons, 2012
Buku Teks
Weaver, Robert F., author
W.C. Brown, 1989
Buku Referensi