COVEY, S. R. (1997). The seven habits of highly effective people. Jakarta: Binarupa Aksara.
استشهاد بنمط شيكاغوCOVEY, Stephen R. The Seven Habits of Highly Effective People. Jakarta: Binarupa Aksara, 1997.
MLA استشهادCOVEY, Stephen R. The Seven Habits of Highly Effective People. Jakarta: Binarupa Aksara, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.