APA Style

Covey, S, R. (2013). The 7 Habits of Highly Effective People : Powerful Lessons in Personal Change . New York: Simon & Schuster.

MLA Style

Covey, Stephen, R.. "The 7 Habits of Highly Effective People : Powerful Lessons in Personal Change". New York: Simon & Schuster, 2013. Koleksi Buku Teks.