Bach, Maurice J.
Prentice-Hall, 1986
Buku Teks SO
Nemeth, Evi
Prentice-Hall, 1989
Buku Referensi
Bach, Maurice J.
Prentice-Hall, 1986
Buku Teks SO
Fanny Angela
Fakultas Ilmu Komputer Universitas Indonesia, 1992
UI - Skripsi Membership
Prata, Stephen
Sams Publishing , 1987
Buku Teks SO