Norman Vincent Peale. (1967). Enthusiasm Makes The Difference.
シカゴスタイル引用形Norman Vincent Peale. Enthusiasm Makes The Difference. Fawcett Crest, New York, 1967.
MLA引用形式Norman Vincent Peale. Enthusiasm Makes The Difference. 1967.
警告: この引用は必ずしも正確ではありません.