Kotz, John C., author
Saunders College Publishing, 1987
Buku Teks
Peters, Edward I., author
McGraw-Hill, 1984
Buku Teks
Peters, Edward I., author
McGraw-Hill, 1992
Buku Teks
Panling, Linus
W.H. Freeman , 1953
Buku Teks
Wiggins, Gary, 1943-, author
McGraw-Hill, 1991
Buku Teks