Morrison, Joline
Course Technology, 1998
Buku Teks SO
Rodgers, Ulka
Yourdon Press, 1991
Buku Referensi
Shee, Richmond
McGraw-Hill, 2004
Buku Teks SO
Atwood, Margaret
McClelland and Stewart, 1976
Buku Teks SO
Hutabarat, Bernaridho I.
Andi , 2004
Buku Teks SO