Butterworth, 1987
Buku Referensi
Artikel Jurnal
Goldstein, Marvin E
McGraw-Hill International Book Co, 1976
Buku Teks
Harris, Marvin, 1927-2001, author
Harper Collins , 1991
Buku Teks
Laskito Harmantyo, author
Fakultas Teknik Universitas Indonesia, 2007
UI - Skripsi (Membership)