edited by H. Douglas Robertson, Joseph E. Hummer and Donna C. Nelson
Prentice-Hall, 1994
Buku Teks SO
Butler, Robert Brown
McGraw-Hill, 1984
Buku Referensi
Stroud, K.A.
Erlangga, 2001
Multimedia
Vierck, Charles J.
McGraw-Hill, 1978
Buku Teks
Theraja, B.L.
S. Chand, 1982
Buku Teks SO