Cita APA

Cooper, G. A., & Grant, R. E. Permian Brachiopods of West Texas, II / G. Arthur Cooper and Richard E. Grant. Washington : Smithsonian Institution Press.

Citación estilo Chicago

Cooper, G. Arthur, y Richard E. Grant. Permian Brachiopods of West Texas, II / G. Arthur Cooper and Richard E. Grant. Washington : Smithsonian Institution Press.

Cita MLA

Cooper, G. Arthur, y Richard E. Grant. Permian Brachiopods of West Texas, II / G. Arthur Cooper and Richard E. Grant. Washington : Smithsonian Institution Press.