SpringerLink (Online service), Shoupe, D., & Christy, A. Contraception and Reproductive Medicine. BioMed Central : Imprint: BioMed Central.
Cita Chicago (17th ed.)SpringerLink (Online service), Donna Shoupe, i Alicia Christy. Contraception and Reproductive Medicine. London: BioMed Central : Imprint: BioMed Central.
Cita MLA (9th ed.)SpringerLink (Online service), et al. Contraception and Reproductive Medicine. BioMed Central : Imprint: BioMed Central.
Atenció: Aquestes cites poden no estar 100% correctes.