Não informado. (1928). Contributions from the Museum of Paleontology. University of Michigan, Museum of Paleontology.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Contributions from the Museum of Paleontology. Ann Arbor, Mich: University of Michigan, Museum of Paleontology, 1928.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Contributions from the Museum of Paleontology. University of Michigan, Museum of Paleontology, 1928.
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