STEVE R BAUMGARDNER. (2009). Positive psychology. Pearson Education.
シカゴスタイル引用形STEVE R BAUMGARDNER. Positive Psychology. New Delhi: Pearson Education, 2009.
MLA引用形式STEVE R BAUMGARDNER. Positive Psychology. Pearson Education, 2009.
警告: この引用は必ずしも正確ではありません.