Cita APA

Cooper, G. A. n. 1., & Cooper, G. A. n. 1. (1972). Premian brachiopods of West Texas. Washington: Smithsonian Institution Press.

Citación estilo Chicago

Cooper, Gustav Arthur n. 1902, y Gustav Arthur n. 1902 Cooper. Premian Brachiopods of West Texas. Washington: Smithsonian Institution Press, 1972.

Cita MLA

Cooper, Gustav Arthur n. 1902, y Gustav Arthur n. 1902 Cooper. Premian Brachiopods of West Texas. Washington: Smithsonian Institution Press, 1972.