APA (7th ed.) Citation

Johnson, R. G., & Richardson, E. S. (1968). The Essex fauna and medusae. Field Museum of Natural History.

Chicago Style (17th ed.) Citation

Johnson, Ralph G., and Eugene S. Richardson. The Essex Fauna and Medusae. Chicago, Ill: Field Museum of Natural History, 1968.

MLA (9th ed.) Citation

Johnson, Ralph G., and Eugene S. Richardson. The Essex Fauna and Medusae. Field Museum of Natural History, 1968.