Devore, Jay L, author
[Springer, ], 2012
eBooks
Mendenhall, William, author
Duxbury Press, 1981
Buku Teks
Kapadia, Asha Seth, author
Chapman & Hall/CRC, 2005
Buku Teks
Freund, John E., author
Prentice-Hall, 1980
Buku Teks
Dudewicz, Edward J., author
ITB Press, 1995
Buku Teks