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John Wiley & Sons, 1974
Buku Teks
Cashman, Thomas J., author
Anaheim Publishing, 1970
Buku Teks
Spencer, Donald D., author
Charles E. Merrill, 1982
Buku Teks
Fariz Darari, author
Fakultas Ilmu Komputer Universitas Indonesia, 2012
Artikel Jurnal
Awad, Elias M., author
Prentice-Hall, 1966
Buku Teks