3Rothblum, Esther D.; Solomon, Laura J.; Murakami, Janice.Affective, cognitive, and behavioral differences between high and low procrastinators. Journal of Counseling Psychology. Vol 33 (4), Oct 1986, 387-394.
4Dianne M Tice,Roy F Baumeister. Longitudinal Study of Procrastination, performance , stress and Health:The Costs and Benefit of Dawdling.Psy- chological Science, 1997, 8(6):454-458.
5Deci E L & Ryan R M. Intrinsic motivation and self- determination in human behavior. New York: Plenum, 1985.
6Amabile T M. Beyond. Talent: John Irving and the passionate craft of creativity. American Psychology, 2001, 56(4) : 333 - 336.
7Dev P C. Intrinsic motivation and academic achievement. Remedial and Special Education, 1997, 18( 10): 12- 19.
8Hwang Y S, Echols C, Vrongistinos K. Muhidimensional academic motivation of high achieving African American students. College Student Journal, 2002, 36(4) : 544- 554.
9Amabile T M. The social psychology of creativity : A componential conceptualization. Journal of Personality and Social Psychology, 1983, 45:357 - 377.
10Noels K A, Clement R & Pelletier L G. Intrinsle, extrinsic, and integrative orientations of French Canadian learners of English, The Canadian Modem Language Review, 2001,57(3) : 424 - 442.