APA (7th ed.) Citation

Lionel H, Opie, Franz H, & Messerli. (1997). Combination drug therapy for hypertension. Lippincott-Raven Publishers.

Chicago Style (17th ed.) Citation

Lionel H, Opie, Franz H, and Messerli. Combination Drug Therapy for Hypertension. New York, Philadelphia: Lippincott-Raven Publishers, 1997.

MLA (9th ed.) Citation

Lionel H, et al. Combination Drug Therapy for Hypertension. Lippincott-Raven Publishers, 1997.