APA (7th ed.) Citation

Cobban, W. A. (1985). The Lower Cretaceous ammonite Schloenbachia leonensis Conrad var. equidistans Cragin. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Cobban, William A. The Lower Cretaceous Ammonite Schloenbachia Leonensis Conrad Var. Equidistans Cragin. [Reston, Va.]: Dept. of the Interior, U.S. Geological Survey, 1985.

MLA (9th ed.) Citation

Cobban, William A. The Lower Cretaceous Ammonite Schloenbachia Leonensis Conrad Var. Equidistans Cragin. Dept. of the Interior, U.S. Geological Survey, 1985.