Elston, Robert C.
F.A. Davis, 1994
Buku Teks
Selvin, Steve
Pearson - Prentice Hall, 2004
Buku Teks SO
Indrayan, A.
Chapman & Hall/CRC, 2008
Buku Teks SO
edited by Rupert G. Miller...[et al.]
John Wiley & Sons, 1980
Buku Teks
Glantz, Stanton A.
McGraw-Hill, 1992
Buku Teks SO