APA (7th ed.) Citation

Rafferty, J. P., & Leonard, M. (2012). Learn how James Watson and Francis Crick discovered the structure of DNA in 1953. Encyclopedia Britannica.

Chicago Style (17th ed.) Citation

Rafferty, John P., and Melinda Leonard. Learn How James Watson and Francis Crick Discovered the Structure of DNA in 1953. Chicago, IL: Encyclopedia Britannica, 2012.

MLA (9th ed.) Citation

Rafferty, John P., and Melinda Leonard. Learn How James Watson and Francis Crick Discovered the Structure of DNA in 1953. Encyclopedia Britannica, 2012.