Covey, Stephen R.
The 8th Habit DVD : from effectiveness to greatness
Free Press, 2005
Multimedia
Clear, James
The Habit Journal
Gramedia Pusaka Utama, 2022
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Arden, Paul
It's not how good you are, it's how good you want to be
Phaidon, 2003
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Schwartz, David Joseph
Berpikir dan berjiwa besar = the magic of thinking big
Binarupa Aksara, 1992
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Arden, Paul
Its not how good you are, its how good you want to be : the world's best-selling book
Phaidon, 2003
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