Marcus, Marvin
Prentice Hall International, 1992
Buku Teks SO
Liebeck, Pamela
Oxford Pergamon Press 1971,
Buku Teks
Davis, Philip J.
John Wiley & Sons, 1979
Buku Teks SO
Perlis, Sam
Addison-Wesley, 1958
Buku Teks SO
Briggs, William L.
Society for Industrial and Applied Mathematics, 2000
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