Gibson, Rajna
McGraw-Hill, 1991
Buku Teks
Achdou, Yves
Society for Industrial and Applied Mathematics, 2005
eBooks
Artikel Jurnal
Bernadette Ellya Jumana
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2002
UI - Tesis Membership
edited by John Brady
Cambridge University Press, 1982
Buku Teks