APA (7th ed.) Citation

Leonard, M., & Rafferty, J. P. (2013). Overview of the seven wonders of the ancient world. Encyclopedia Britannica.

Chicago Style (17th ed.) Citation

Leonard, Melinda, and John P. Rafferty. Overview of the Seven Wonders of the Ancient World. Chicago, IL: Encyclopedia Britannica, 2013.

MLA (9th ed.) Citation

Leonard, Melinda, and John P. Rafferty. Overview of the Seven Wonders of the Ancient World. Encyclopedia Britannica, 2013.

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