Romer, Daniel, and Elaine F. Walker. "Introduction." Adolescent Psychopathology and the Developing Brain: Integrating Brain and Prevention Science. : Oxford University Press, 2007-03-22. Oxford Scholarship Online. 2009-05-01. Date Accessed 20 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195306255.001.0001/acprof-9780195306255-chapter-99>.
Romer, D., & Walker, E.(2007-03-22). Introduction. In Adolescent Psychopathology and the Developing Brain: Integrating Brain and Prevention Science. : Oxford University Press. Retrieved 20 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195306255.001.0001/acprof-9780195306255-chapter-99.
Romer, Daniel, and Elaine F. Walker. "Introduction." In Adolescent Psychopathology and the Developing Brain: Integrating Brain and Prevention Science. : Oxford University Press, 2007-03-22. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195306255.001.0001/acprof-9780195306255-chapter-99.
Romer D, Walker EF. Introduction. In: Romer D, Walker EF. Adolescent Psychopathology and the Developing Brain: Integrating Brain and Prevention Science. Oxford University Press; 2007. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195306255.001.0001/acprof-9780195306255-chapter-99. Accessed June 20, 2013.