Roberson, John A., author
Houghton Miffiln, 1990
Buku Teks
by Clayton T. Crowe [and others]
John Wiley & Sons, 2010
Buku Teks
Olson, Reuben M., author
International Textbook, 1961
Buku Teks
Mironer, Alan, author
McGraw-Hill, 1979
Buku Teks
Crowe, Clayton T., author
John Wiley & Sons, 2001
Buku Teks