Enger, Eldon D., author
McGraw-HIll, 2003
Buku Teks
Vodopich, Darrell S., author
McGraw-Hill, 2008
Buku Teks
Duff, Michael F., author
Burgess, 1973
Buku Teks
Bregman, Allyn A., author
John Wiley & Sons, 1983
Buku Teks
editors, Norman K. Wessells, Elizabeth M. Center
William Kaufmann, 1973
Buku Teks