Ruggiero, Vincent Ryan, author
Alfred Publishing Co., Inc., 1981
Buku Teks
Caruso, Domenick, author
W.W. Norton, 1977
Buku Teks
VanderMey, Randal, author
Wadsworth and Cengage Learning, 2012
Buku Teks
Scharton, Maurice
Allyn and Bacon, 1993
Buku Teks
Little, Brown And Company, 1982
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