APA (7th ed.) Citation

Young, R. E., & Roper, C. F. E. (1969). A monograph of the Cephalopoda of the North Atlantic: The family Cycloteuthidae. Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

Young, Richard E., and Clyde F. E. Roper. A Monograph of the Cephalopoda of the North Atlantic: The Family Cycloteuthidae. Washington, D.C.: Smithsonian Institution Press, 1969.

MLA (8th ed.) Citation

Young, Richard E., and Clyde F. E. Roper. A Monograph of the Cephalopoda of the North Atlantic: The Family Cycloteuthidae. Smithsonian Institution Press, 1969.