Causton, David R.
Gadjah Mada University Press, 1993
Buku Teks SO
Rubinow, S.I.
Society for Industrial and Applied Mathematics, 1973
eBooks
Raina S. Robeva
Elsevier, 2008
Buku Teks SO
Riggs, Douglas Shepard
Williams & Willkins, 1963
Buku Teks SO
Neuhauser, Claudia
Prentice-Hall, 2000
Buku Teks SO