- (n.d.)
- (n.d.)
- (n.d.)
- III, chapter 3, page 1--19. Routledge, London, (2009)
- Routledge, (2008)
- chapter 11, page 359--400. John Wiley& Sons, Incorporated, (2008)
- Review of Educational Research (2007)
- (2005)
- Psychological Review (2004)
- The British Journal of Educational Psychology (March 2001)
- Routledge, (1999)
- Journal of Experimental Psychology (1948)


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