Hadwiger, Don F.
Cal. Chandler Pub. , 1965
Buku Teks
Annas, George J., author
Humana Press, 1988
Buku Teks
Gould, William B., IV, author
MIT Press, 1982
Buku Teks
Rosenberg, Peter D., author
Clark Boardman, 1975
Buku Teks
Vandenburgh III, Edward C.
The Bobbs-Merill Company,Inc., 1968
Buku Teks