Rieskamp, Jörg, and Philipp E. Otto. "SSL: A Theory of How People Learn to Select Strategies." Heuristics: The Foundations of Adaptive Behavior. : Oxford University Press, 2011-04-15. Oxford Scholarship Online. 2011-05-01. Date Accessed 23 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199744282.001.0001/acprof-9780199744282-chapter-11>.
Rieskamp, J., & Otto, P.(2011-04-15). SSL: A Theory of How People Learn to Select Strategies. In Heuristics: The Foundations of Adaptive Behavior. : Oxford University Press. Retrieved 23 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199744282.001.0001/acprof-9780199744282-chapter-11.
Rieskamp, Jörg, and Philipp E. Otto. "SSL: A Theory of How People Learn to Select Strategies." In Heuristics: The Foundations of Adaptive Behavior. : Oxford University Press, 2011-04-15. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199744282.001.0001/acprof-9780199744282-chapter-11.
Rieskamp J, Otto PE. SSL: A Theory of How People Learn to Select Strategies. In: Gigerenzer G, Hertwig R, Pachur T. Heuristics: The Foundations of Adaptive Behavior. Oxford University Press; 2011. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199744282.001.0001/acprof-9780199744282-chapter-11. Accessed May 23, 2013.