Todd, D. J.
Chapman and Hall, 1985
Buku Referensi
DuBridge, Lee A
New York University Press 1962
Buku Teks
Robert R. Archer ... [et al.] ; edited, Thomas J. Lardner
McGraw-Hill , 1978
Buku Teks
Fox, Robert W., 1934-
John Wiley & Sons, 1992
Buku Teks
Reichert, Jonathan F.
Prentice-Hall, 1991
Buku Teks