Style de citation APA (7e éd.)

Covey, S. (1997). The 7 habits of highly effective families. Simon & Schuster.

Style de citation Chicago (17e éd.)

Covey, Stephen. The 7 Habits of Highly Effective Families. New York: Simon & Schuster, 1997.

Style de citation MLA (9e éd.)

Covey, Stephen. The 7 Habits of Highly Effective Families. Simon & Schuster, 1997.