Royama, T.
Chapman & Hall, 1992
Buku Teks
Nam, Charles B.
Hoghton Mifflin., 1976
Buku Teks SO
American Association for the Advancement of Science, 1975
Buku Teks SO
Cushing, Jim M., 1942-
Society for Industrial and Applied Mathematics, 1998
eBooks
edited by Roy M. Anderson
Chapman & Hall, 1982
Buku Teks SO