Rees, W. G., author
Cambridge University Press, 1994
eBooks
Christian, Wolfgang
Pearson Education, 2004
Multimedia
California Research and Education Association, 1995
Buku Teks
Walker, Jearl, 1945-, author
John Wiley & Sons, 1977
Buku Teks
edited by Thomas L. O'Kuma, David P. Maloney and Curtis J. Hieggelke
Prentice-Hall, 2000
Buku Teks