Sandmaier, Marian
Tab Books, 1992
Buku Teks
edited by Harold M. Groves
Henry Holt and Company, 1955
Buku Teks
Columbia University Press, 1968
Buku Teks
Fritschler, A Lee
Mass Ballinger Publishing , 1987
Buku Teks
Rutstein, David D.
The Massachusett Institute of Technology, 1967
Buku Teks