Ostrom, J. H. (1970). Stratigraphy and paleontology of the Cloverly Formation (Lower Cretaceous) of the Bighorn Basin area: Wyoming and Montana. Peabody Museum of Natural History, Yale University.
Chicago-viite (17. p.)Ostrom, John H. Stratigraphy and Paleontology of the Cloverly Formation (Lower Cretaceous) of the Bighorn Basin Area: Wyoming and Montana. New Haven: Peabody Museum of Natural History, Yale University, 1970.
MLA-viite (9. p.)Ostrom, John H. Stratigraphy and Paleontology of the Cloverly Formation (Lower Cretaceous) of the Bighorn Basin Area: Wyoming and Montana. Peabody Museum of Natural History, Yale University, 1970.
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