APA

Geological Survey (U.S.), . (1966). Cretaceous and Tertiary rocks in the Corozal quadrangle, northern Puerto Rico. [Washington, D.C.]: United States Department of the Interior, Geological Survey.

Chicago

Geological Survey (U.S.), . 1966. Cretaceous and Tertiary rocks in the Corozal quadrangle, northern Puerto Rico. [Washington, D.C.]: United States Department of the Interior, Geological Survey.

Harvard

Geological Survey (U.S.), . (1966). Cretaceous and Tertiary rocks in the Corozal quadrangle, northern Puerto Rico. [Washington, D.C.]: United States Department of the Interior, Geological Survey.

MLA

Geological Survey (U.S.), . Cretaceous and Tertiary rocks in the Corozal quadrangle, northern Puerto Rico. [Washington, D.C.]: United States Department of the Interior, Geological Survey. 1966.