Billy Boen
Young on top new edition: 35 kunci sukses di usia muda
B. first, 2012
 Buku Teks SO
Tracy, Brian
The way to wealth in action : membangun bisnis yang sangat menguntungkan
Elex Media Komputindo, 2009
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Scott, Gini Graham
Want it, see it, get it: visualize your way to success
American Management Association, 2009
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Christiansen, Rich, 1965-
The zigzag principle: the goal-setting strategy that will revolutionize your business and your life
McGraw-Hill, 2012
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Tracy, Brian
Focal point: a proven system to simplify your life, double your productivity, and achieve all your goals
American Management Association, 2002
 eBooks