Lister, R. H. (1951). Excavations at Hells Midden Dinosaur National Monument. University of Colorado.
Cita Chicago Style (17a ed.)Lister, Robert H. Excavations at Hells Midden Dinosaur National Monument. Colorado: University of Colorado, 1951.
Cita MLA (8a ed.)Lister, Robert H. Excavations at Hells Midden Dinosaur National Monument. University of Colorado, 1951.
Precaución: Estas citas no son 100% exactas.