Rudwick, Bernard H., author
John Wiley & Sons, 1969
Buku Teks
Edwards, Perry
Mitchell McGraw-Hill , 1993
Buku Teks
Cutts, Geoff, author
Alfred Waller, [date of publication not identified]
Buku Teks
Checkland, Peter, author
John Wiley & Sons, 2009
Buku Teks
Dewitz, Sandra Donaldson, author
McGraw-Hill, 1996
Buku Teks