Hinton, Perry R., author
Routledge, 2004
Buku Teks
Ullman, Neil R., author
John Wiley & Sons, 1978
Buku Teks
Kuebler, Roy R., author
John Wiley & Sons, 1976
Buku Teks
McClave, James T., author
Dellen Publishing, 1979
Buku Teks
Hays, William L., author
Harcourt Brace Colege, 1994
Buku Teks