Storer, Robert W. 1976. "The Pleistocene Pied-billed Grebes (Aves: Podicipedidae)." In Collected papers in avian paleontology honoring the 90th birthday of Alexander Wetmore. 147–153. Washington, D.C.: Smithsonian Institution Press. In Smithsonian Contributions to Paleobiology, 27. https://doi.org/10.5479/si.00810266.27.147.