APA (7th ed.) Citation

Simpson, G. G. (1933). Stratigraphic nomenclature of the early Tertiary of central Patagonia. American Museum of Natural History.

Chicago Style (17th ed.) Citation

Simpson, George Gaylord. Stratigraphic Nomenclature of the Early Tertiary of Central Patagonia. New York City: American Museum of Natural History, 1933.

MLA (9th ed.) Citation

Simpson, George Gaylord. Stratigraphic Nomenclature of the Early Tertiary of Central Patagonia. American Museum of Natural History, 1933.