McClave, James T., author
Prentice-Hall, 2000
Buku Teks
Gravetter, Frederick J., author
Thomson Wadsworth, 2007
Buku Teks
Book, Stephen A., author
McGraw-Hill, 1978
Buku Teks
Chalmer, Bruce J., author
Marcel Dekker, 1987
Buku Teks
Kuebler, Roy R., author
John Wiley & Sons, 1976
Buku Teks