Society of Vertebrate Paleontology (U.S.), University of Michigan. Dept. of Geological Sciences, University of Michigan. Museum of Paleontology, & Gingerich, P. D. (1980). Early Cenozoic paleontology and stratigraphy of the Bighorn Basin, Wyoming: Commemorating the 100th anniversary of J.L. Wortman's discovery of fossil mammals in the Bighorn Basin. University of Michigan.
芝加哥风格引文Society of Vertebrate Paleontology (U.S.), University of Michigan. Dept. of Geological Sciences, University of Michigan. Museum of Paleontology, 与 Philip D. Gingerich. Early Cenozoic Paleontology and Stratigraphy of the Bighorn Basin, Wyoming: Commemorating the 100th Anniversary of J.L. Wortman's Discovery of Fossil Mammals in the Bighorn Basin. Ann Arbor, Mich.: University of Michigan, 1980.
MLA引文Society of Vertebrate Paleontology (U.S.), et al. Early Cenozoic Paleontology and Stratigraphy of the Bighorn Basin, Wyoming: Commemorating the 100th Anniversary of J.L. Wortman's Discovery of Fossil Mammals in the Bighorn Basin. University of Michigan, 1980.