ebrary, Inc, Sansone, C., & Harackiewicz, J. M. (2000). Intrinsic and extrinsic motivation: The search for optimal motivation and performance. Academic Press.
Citazione stile Chigago Style (17a edizione)ebrary, Inc, Carol Sansone, e Judith M. Harackiewicz. Intrinsic and Extrinsic Motivation: The Search for Optimal Motivation and Performance. San Diego: Academic Press, 2000.
Citatione MLA (9a ed.)ebrary, Inc, et al. Intrinsic and Extrinsic Motivation: The Search for Optimal Motivation and Performance. Academic Press, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.