Cochran, William G.
John Wiley & Sons, 1983
Buku Teks
Drummond, Michael F.
Oxford University Press, 1981
Buku Teks
McConnell, Charles R.
Jones and Bartlett, 2011
Buku Teks
Thomas-Brogan, Teri
Jones and Bartlett, 2009
Buku Teks
Purnell, Larry D.
F.A. Davis, 2005
Buku Teks