APA (7th ed.) Citation

O'Reilly, B., Bottomley, C., & Rymer, J. (2012). Essentials of obstetrics and gynaecology (2nd ed.). Elsevier/Saunders.

Chicago Style (17th ed.) Citation

O'Reilly, Barry, Cecilia Bottomley, and Janice Rymer. Essentials of Obstetrics and Gynaecology. 2nd ed. Edinburgh: Elsevier/Saunders, 2012.

MLA (9th ed.) Citation

O'Reilly, Barry, et al. Essentials of Obstetrics and Gynaecology. 2nd ed. Elsevier/Saunders, 2012.