Mendenhall, William, author
Duxbury Press, 1981
Buku Teks
Ractliffe, J.F.
Oxford University Press , 1962
Buku Teks
Devore, Jay L, author
[Springer, ], 2012
eBooks
Kapadia, Asha Seth, author
Chapman & Hall/CRC, 2005
Buku Teks
edited by Jerzy Neyman
University of California Press , 1956
Buku Teks