APA (7th ed.) Citation

Mark, C., & Langer, R. (1990). Biodegradable Polymers as Drug Delivery System. New York.

Chicago Style (17th ed.) Citation

Mark, Chasin, and Robert Langer. Biodegradable Polymers as Drug Delivery System. Marcel Dekker: New York, 1990.

MLA (9th ed.) Citation

Mark, Chasin, and Robert Langer. Biodegradable Polymers as Drug Delivery System. New York, 1990.