Anton, Hector R., author
Houghton Mifflin, 1978
Buku Teks
Guan, Liming, author
South Western Cengage Learning, 2009
Buku Teks
Heitger, Lester E., author
South-Western Publishing, 1992
Buku Teks
Schmiedicke, Albert E., author
Ohio South-Western Publishing , 1988
Buku Teks
Gray, Jack, author
McGraww-Hill, 1982
Buku Teks