ebrary, Inc, Sansone, C., & Harackiewicz, J. M. (2000). Intrinsic and extrinsic motivation: The search for optimal motivation and performance. Academic Press.
Chicago Style (17th ed.) Citationebrary, Inc, Carol Sansone, and Judith M. Harackiewicz. Intrinsic and Extrinsic Motivation: The Search for Optimal Motivation and Performance. San Diego: Academic Press, 2000.
MLA (9th ed.) Citationebrary, Inc, et al. Intrinsic and Extrinsic Motivation: The Search for Optimal Motivation and Performance. Academic Press, 2000.
Warning: These citations may not always be 100% accurate.