APA (7th ed.) Citation

Leonard, M., & Rafferty, J. P. (2012). Overview of the distinctive features of tulip trees (liriodendron tulipifera). Encyclopedia Britannica.

Chicago Style (17th ed.) Citation

Leonard, Melinda, and John P. Rafferty. Overview of the Distinctive Features of Tulip Trees (liriodendron Tulipifera). Chicago, IL: Encyclopedia Britannica, 2012.

MLA (9th ed.) Citation

Leonard, Melinda, and John P. Rafferty. Overview of the Distinctive Features of Tulip Trees (liriodendron Tulipifera). Encyclopedia Britannica, 2012.