MacPhail, C., Pettifor, A. E., Pascoe, S., & Rees, H. V. (2007). Contraception use and pregnancy among 15–24 year old South African women: A nationally representative cross-sectional survey. BioMed Central.
Chicago Style aipamenaMacPhail, Catherine, Audrey E. Pettifor, Sophie Pascoe, and Helen V. Rees. Contraception Use and Pregnancy Among 15–24 Year Old South African Women: A Nationally Representative Cross-sectional Survey. BioMed Central, 2007.
MLA aipamenaMacPhail, Catherine, Audrey E. Pettifor, Sophie Pascoe, and Helen V. Rees. Contraception Use and Pregnancy Among 15–24 Year Old South African Women: A Nationally Representative Cross-sectional Survey. BioMed Central, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.