Majors, Randall E., author
Prentice-Hall, 1997
Buku Teks
American Association for the Advancement of Science,, 1974
Buku Teks
Cummings, William K., author
Springer, 2012
eBooks
Veccia, Susan H., author
[American Library association, ], 2004
eBooks
McClenaghan, William A.
Allyn & Bacon, Inc., 1964
Buku Teks