Bierman, Harold, author
McGraw-Hill , 1963
Buku Teks
Artikel Jurnal
Muhammad Kurniadi, author
Universitas Indonesia, 2011
UI - Skripsi (Open)
Carter, William K., 1951-, author
Dame/Thomson Learning, 2002
Buku Teks
Hammer, Lawrence H., author
South-Western, 1993
Buku Teks