McGrath, James, author
McGraw-Hill, 2001
Buku Teks
Callon, Jack D.
McGraw-Hill Companies, 1996
Buku Teks
Callon, Jack D.
McGraw-Hill , 1996
Buku Teks
Pitts, Robert A., author
South-Western College Publishing, 2000
Buku Teks
Porter, Michael E., author
The Free Press , 1990
Buku Teks