edited by Simon M. Newman
Spartan , 1965
Buku Teks SO
Baeza-Yates, Ricardo
Addison-Wesley , 1999
Buku Teks SO
Williams, William F.
Business Press, 1968
Buku Teks SO
Lancaster, F. Wilfrid
John Wiley & Sons, 1979
Buku Teks SO
edited by Morris Rubinoff
Spartan Books , 1965
Buku Teks SO