Edwards, Perry
Mitchell McGraw-Hill , 1993
Buku Teks
Cutts, Geoff, author
Alfred Waller, [date of publication not identified]
Buku Teks
Dewitz, Sandra Donaldson, author
McGraw-Hill, 1996
Buku Teks
Boyd & Fraser , 1991
Buku Teks
Satzinger, John W., author
Course Tecnology Cengage, 2012
Buku Teks