Davis, Randall
Addison-Wesley, 1987
Buku Teks SO
Gupta, Uma
IEEE Computer Society Press, 1991
Buku Referensi
Alty, J.L.
NCC Publications, 1984
Buku Teks SO
edited by, Frederick Hayes-Roth, Donald A. Waterman and Douglas Lenat
Addison-Wesley, 1983
Buku Teks SO
Shapiro, Alen D.
Addison-Wesley, 1987
Buku Teks SO