Kirk, Roey
An Aspen Publication, 1988
Buku Teks
Carey, Raymond G.
Quality Resources, 1997
Buku Teks
Linda A. Winters-Miner, Pat S. Bolding, Joseph M. Hilbe, Mitchell Goldstein, Thomas Hill, Robert Nisbet, Nephi Walton, Gary D. Miner
Academic Press, 2015
eBooks
Rothman, Kenneth J., author
Oxford University Press, 2002
Buku Teks
edited by Michael B. Gregg
Oxford University Press, 2002
Buku Teks