Richardson, Judy S., 1945-, author
Wadsworth and Cengage Learning, 2012
Buku Teks
Fowler, Douglas
Cornell University Press, 1974
Buku Teks
Blair, Walter, author
Scott, Foresman and Company, 1948
Buku Teks
Friedlob, G. Thomas., author
Barron?s, 2001
Buku Teks
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