Electronic/World Wide Web>Internet Article:  Yeh, BS, Rochette, PhD, McKenzie, PhD, MA, Smith, MD, DrPH (February 17, 2011), Injuries Associated With Cribs, Playpens, and Bassinets Among Young Children in the US, 1990–2008, Pediatrics, Retrieved on 2011-02-17

Source Material [pediatrics.aappublications.org]