APA (7th ed.) Citation

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

MLA (9th ed.) Citation

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