Machery, Edouard. "Concepts in Psychology." Doing without Concepts. : Oxford University Press, 2009-03-19. Oxford Scholarship Online. 2009-05-01. Date Accessed 17 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195306880.001.0001/acprof-9780195306880-chapter-2>.
Machery, E.(2009-03-19). Concepts in Psychology. In Doing without Concepts. : Oxford University Press. Retrieved 17 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195306880.001.0001/acprof-9780195306880-chapter-2.
Machery, Edouard. "Concepts in Psychology." In Doing without Concepts. : Oxford University Press, 2009-03-19. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195306880.001.0001/acprof-9780195306880-chapter-2.
Machery E. Concepts in Psychology. In: Machery E. Doing without Concepts. Oxford University Press; 2009. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195306880.001.0001/acprof-9780195306880-chapter-2. Accessed June 17, 2013.