Gaya APA

Croxatto, H. et al (2005). New Mechanisms for Tissue-Selective Estrogen-Free Contraception (1st ed.). Berlin, Heidelberg: Springer.

Gaya MLA

Croxatto, H.B.. et al. "New Mechanisms for Tissue-Selective Estrogen-Free Contraception". 1st ed. Berlin, Heidelberg: Springer, 2005. E Book.