APA ציטוט

COVEY, S. R. (1997). The seven habits of highly effective people. Jakarta: Binarupa Aksara.

Chicago Style Citation

COVEY, Stephen R. The Seven Habits of Highly Effective People. Jakarta: Binarupa Aksara, 1997.

ציטוט MLA

COVEY, Stephen R. The Seven Habits of Highly Effective People. Jakarta: Binarupa Aksara, 1997.