John Murray Learning, 2017
Buku Teks
Florida, Richard L., author
Basic Books, 2009
Buku Teks
Shure, Myrna B., author
McGraw-Hill , 2005
Buku Teks
Murdin, Paul, author
Thames & Hudson, 2009
Buku Referensi
Chan, Janis Fisher, author
[American Management Association;, ], 2007
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