Peck, Ralph B. (Ralph Brazelton), author
Charles E. Tuttle, 1953
Buku Teks
editors, William D. McElroy and Carl P. Swanson
Prentice-Hall, 1968
Buku Teks
Hughes, Robert James, 1946-, author
South-Western Cengage Learning, 2013
Buku Teks
Asimov, Isaac, author
Doubleday, 1986
Buku Teks
Das, Braja M., author
Cengage Learning, 2011
Buku Teks