United States. Central Intelligence Agency, United States. Department of State. Office of the Geographer, Heezen, B. C., & Tharp, M. (1970). Major topographic divisions of the continental margins. [Central Intelligence Agency?].
Chicago Style (17th ed.) CitationUnited States. Central Intelligence Agency, United States. Department of State. Office of the Geographer, Bruce C. Heezen, and Marie Tharp. Major Topographic Divisions of the Continental Margins. [Washington, D.C.?]: [Central Intelligence Agency?], 1970.
MLA (9th ed.) CitationUnited States. Central Intelligence Agency, et al. Major Topographic Divisions of the Continental Margins. [Central Intelligence Agency?], 1970.
Warning: These citations may not always be 100% accurate.