Dyfyniad APA

Covey, S. (1998). The 7 habits of highly effective teens: The ultimate teenage success guide. Simon & Schuster.

Dyfyniad Arddull Chicago

Covey, Sean. The 7 Habits of Highly Effective Teens: The Ultimate Teenage Success Guide. New York: Simon & Schuster, 1998.

Dyfyniad MLA

Covey, Sean. The 7 Habits of Highly Effective Teens: The Ultimate Teenage Success Guide. Simon & Schuster, 1998.

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