Anderson, Theodore R.
Holt, Rinehart, 1968
Buku Teks
Wasserman, Larry, author
Springer, 2010
Buku Teks
Sellers, Gene R.
WB. Saunders, 1977
Buku Teks
Norman, Geoffrey R.
Manlygraphic , 1989
Buku Teks
Wine, R. Lowell
Prentice Hall of India, 1966
Buku Teks