Covey, S. (1998). The 7 habits of highly effective teens: The ultimate teenage success guide. Simon & Schuster.
Chicagoスタイル(17版)引用形式Covey, Sean. The 7 Habits of Highly Effective Teens: The Ultimate Teenage Success Guide. New York: Simon & Schuster, 1998.
MLA(8版)引用形式Covey, Sean. The 7 Habits of Highly Effective Teens: The Ultimate Teenage Success Guide. Simon & Schuster, 1998.
警告: この引用は必ずしも正確ではありません.