APA (7th ed.) Citation

Heffner, J. E., Sahn, S. A., & Marsh, C. B. (2001). Internal medicine pearls (Second edition.). Hanley & Belfus.

Chicago Style (17th ed.) Citation

Heffner, John E., Steven A. Sahn, and Clay B. Marsh. Internal Medicine Pearls. Second edition. Philadelphia: Hanley & Belfus, 2001.

MLA (9th ed.) Citation

Heffner, John E., et al. Internal Medicine Pearls. Second edition. Hanley & Belfus, 2001.