Simpson, G. G. (1929). Third contribution to the Fort Union fauna at Bear Creek, Montana. The American Museum of Natural History.
Chicago-Zitierstil (17. Ausg.)Simpson, George Gaylord. Third Contribution to the Fort Union Fauna at Bear Creek, Montana. New York City: The American Museum of Natural History, 1929.
MLA-Zitierstil (9. Ausg.)Simpson, George Gaylord. Third Contribution to the Fort Union Fauna at Bear Creek, Montana. The American Museum of Natural History, 1929.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.