Young, R. E. 1., & Roper, C. F. E. 1. (1969). A monograph of the Cephalopoda of the North Atlantic: The family Cycloteuthidae. Washington: Smithsonian Institution Press.
Chicago Style CitationYoung, Richard Edward 1938-, and Clyde F. E. 1937- Roper. A Monograph of the Cephalopoda of the North Atlantic: The Family Cycloteuthidae. Washington: Smithsonian Institution Press, 1969.
MLA CitationYoung, Richard Edward 1938-, and Clyde F. E. 1937- Roper. A Monograph of the Cephalopoda of the North Atlantic: The Family Cycloteuthidae. Washington: Smithsonian Institution Press, 1969.
Warning: These citations may not always be 100% accurate.