Maglio, Rodolfo
Macmillan, 1985
Buku Teks
Budnick, Frank S., author
McGraw-Hill, 1985
Buku Teks
Dineen, Sean, author
American Mathematical society, 2005
Buku Teks
[by] John G. Kemeny [and others]
Prentice-Hall, 1962
Buku Teks
Bradley, Teresa, author
John Wiley & Sons, 2002
Buku Teks