Sonya S. Brady, PhD and Bonnie L. Halpern-Felsher, PhD (2007). "Adolescents' Reported Consequences of Having Oral Sex Versus Vaginal Sex". Pediatrics119 (2). pp.229–236. PMID17272611. doi:10.1542/peds.2006-1727.
Sonya S. Brady, PhD and Bonnie L. Halpern-Felsher, PhD (2007). "Adolescents' Reported Consequences of Having Oral Sex Versus Vaginal Sex". Pediatrics119 (2). pp.229–236. PMID17272611. doi:10.1542/peds.2006-1727.