"Children, Adolescents, and Television -- Committee on Public Education 107 (2): 423 -- AAP Policy." AAP Policy - Journal of the American Academy of Pediatrics. Web. 20 June 2011. <http://aappolicy.aappublications.org/cgi/content/full/pediatrics;107/2/423>.
Bright Futures Pocket Guide, 3rd Edition. Edited by Joseph F. Hagan Jr. MD, FAAP; Judith S. Shaw, RN, MPH, EdD; and Paula Duncan, MD, FAAP. American Academy of Pediatrics. Accessed from http://brightfutures.aap.org/pdfs/BF3%20pocket%20guide_final.pdf