Trump, Ivanka, 1981-, author
Penguin, 2017
Buku Teks
Huffington, Arianna, author
Harmony Books, 2015
Buku Teks
Carter, Gary W., author
Wiley-Blackwell, 2009
Buku Teks
Callahan, Robert E.
Merrill , 1988
Buku Teks
Zichy, Shoya, author
[American Management Association, ], 2013
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