Hammer, Nelson R.
Rockport, 1999
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Binggeli, Corky
John Wiley & Sons, 2008
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Pile, John F.
H.N. Abrams, 1995
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Whiton, Sherrill
HarperCollins, 1974
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Kurtich, John
Van Nostrand Reinhold, 1993
Buku Referensi