APA (7th ed.) Citation

O'Hara, S., Zelesco, M., Sun, Z., & Lee, E. (2015). The maternal cervix: Why, when and how?

Chicago Style (17th ed.) Citation

O'Hara, Sandra, M. Zelesco, Zhonghua Sun, and E. Lee. The Maternal Cervix: Why, When and How? 2015.

MLA (9th ed.) Citation

O'Hara, Sandra, et al. The Maternal Cervix: Why, When and How? 2015.