APA (7th ed.) Citation

Leonard, M. (2011). Overview of phytoplankton, the major photosynthesizing organisms on Earth. Encyclopedia Britannica.

Chicago Style (17th ed.) Citation

Leonard, Melinda. Overview of Phytoplankton, the Major Photosynthesizing Organisms on Earth. Chicago, IL: Encyclopedia Britannica, 2011.

MLA (9th ed.) Citation

Leonard, Melinda. Overview of Phytoplankton, the Major Photosynthesizing Organisms on Earth. Encyclopedia Britannica, 2011.