Borner, Katy
London : MIT press, 2015
Buku Referensi
edited by Ronald J. Brachman; Hector J. Levesque
Morgan Kaufmann Publishers, 1985
Buku Teks
Brachman, Ronald J.
Elsevier, 2004
Buku Teks
edited by Leif B. Methlie and Ralph H. Sprague
North Holland, 1985
Buku Teks
Thurow, Lester C.
HarperCollins, 1999
Buku Teks