APA (7th ed.) Citation

Gabbe, S. G., Niebyl, J. R., Simpson, J. L., & Landon, M. B. (2012). Obstetrics: Normal and problem pregnancies (Sixth edition.). Elsevier/Saunders.

Chicago Style (17th ed.) Citation

Gabbe, Steven G., Jennifer R. Niebyl, Joe Leigh Simpson, and Mark B. Landon. Obstetrics: Normal and Problem Pregnancies. Sixth edition. Philadelphia, PA: Elsevier/Saunders, 2012.

MLA (9th ed.) Citation

Gabbe, Steven G., et al. Obstetrics: Normal and Problem Pregnancies. Sixth edition. Elsevier/Saunders, 2012.

Warning: These citations may not always be 100% accurate.