Walton, Douglas, author
Cambridge University Press, 2006
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Eemeren, Frans H. van, author
Springer, 2012
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Blair, J. Anthony, 1941-
Springer Science, 2012
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Rainbolt, George W., author
Wadsworth and Cengage Learning, 2012
Buku Teks
Foresman, Galen A., author
Wiley Blackwell, 2017
Buku Teks