Heady, Earl O., author
Iowa State University Press, 1969
Buku Teks
edited by David F. Paulsen and Robert B. Denhardt
Dodd, Mead, 1973
Buku Teks
Sorrett, 1977
Buku Teks
edited by John Friedmann and William Alonso
MIT Press, 1975
Buku Teks
Teitelbaum, Joel Bern, author
Jones and Bartlett Learning, 2013
Buku Teks