Cameron, Edward A., author
Reynal & Hitchock, 1941
Buku Teks
Buchanan, Herbert E., author
Johnson Pub., 1926
Buku Teks
Larson, Ron, 1941-, author
D.C. Health, 1989
Buku Teks
Young, Cynthia Y., author
John Wiley & Sons, Inc, 2007
Buku Teks
Davis, Hannibal Albert, author
American Book, 1933
Buku Teks