Tohutoro APA (7th ed.)
HAY, O. P. (1929). Second Bibliography and catalogue of the fossi vertebrata of North America.
Tohutoru Kātū Chicago (17th ed.)
HAY, Oliver Perry. Second Bibliography and Catalogue of the Fossi Vertebrata of North America. Washington, 1929.
Tohutoro MLA (9th ed.)
HAY, Oliver Perry. Second Bibliography and Catalogue of the Fossi Vertebrata of North America. 1929.
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