Powell, L. D. (2009, 29. October). Spinal injuries in adolescent athletes. Zugriff unter http://www.hughston.com/hha/a_11_4_5.htm
APA (7th ed.) CitationPowell, L. D. Spinal injuries in adolescent athletes. Hughston Sports Medicine Foundation.
Chicago Style (17th ed.) CitationPowell, L. D. Spinal Injuries in Adolescent Athletes. Hughston Sports Medicine Foundation.
MLA (9th ed.) CitationPowell, L. D. Spinal Injuries in Adolescent Athletes. Hughston Sports Medicine Foundation.
Warning: These citations may not always be 100% accurate.