HInkle, Deborah
Glencoe/McGraw-Hill , 2002
Buku Teks
Fakultas Teknik Universitas Indonesia, 2004
UI - Skripsi (Membership)
Borland, Russell
Elex Media Komputindo, 1991
Buku Referensi
Cram, Carol M.
Cengage Learning , 2012
Buku Teks
Grauer, Robert T.
Pearson Education, 2003
Buku Teks