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.
Citazione stile Chigago Style (17a edizione)Society of Vertebrate Paleontology (U.S.), University of Michigan. Dept. of Geological Sciences, University of Michigan. Museum of Paleontology, e 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.
Citatione MLA (8a ed.)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.