Berry, Carole C., 1958-2014, author
Thomson Reuters, 2009
Buku Teks
Moore, Robert Hamilton, author
Holt, Rinehart and Winston, 1959
Buku Teks
Barnet, Sylvan, author
Bedford/St. Martin's, 2002
Buku Teks
Barnet, Sylvan, author
Bedford/St Martin's, 2014
Buku Teks
May, Claire B., author
Upper saddle river, 2009
Buku Teks