ebrary, Inc, Sansone, C., & Harackiewicz, J. M. (2000). Intrinsic and extrinsic motivation: The search for optimal motivation and performance. Academic Press.
Цитирование в стиле Чикаго (17-е изд.)ebrary, Inc, Carol Sansone, и Judith M. Harackiewicz. Intrinsic and Extrinsic Motivation: The Search for Optimal Motivation and Performance. San Diego: Academic Press, 2000.
Цитирование MLA (9-е изд.)ebrary, Inc, et al. Intrinsic and Extrinsic Motivation: The Search for Optimal Motivation and Performance. Academic Press, 2000.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.