Zarefsky, David, author
Allyn and Bacon, 2011
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Carnegie, Dale, 1888-1955, author
Bhuana Ilmu Populer, 2022
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Zarefsky, David, author
Allyn and Bacon, 1996
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Gamble, Teri Kwal, author
Allyn and Bacon, 1994
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Devito, Joseph A., author
Harper and Row, 1984
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