Peale, N. V. (2003). Enthusiasm makes the difference. Simon & Schuster.
シカゴスタイル引用形Peale, Norman Vincent. Enthusiasm Makes the Difference. New York: Simon & Schuster, 2003.
MLA引用形式Peale, Norman Vincent. Enthusiasm Makes the Difference. Simon & Schuster, 2003.
警告: この引用は必ずしも正確ではありません.