Shimer Grabau W. & Shrock Robert R. (1955). Index of Fossils North America: A publication of the technology press massachusetts institute of technology. New York, John Wiley & Sons, Inc., 1955.
Chicagoスタイル(17版)引用形式Shimer Grabau W. , Shrock Robert R. Index of Fossils North America: A Publication of the Technology Press Massachusetts Institute of Technology. New York, John Wiley & Sons, Inc., 1955, 1955.
MLA(9版)引用形式Shimer Grabau W. , Shrock Robert R. Index of Fossils North America: A Publication of the Technology Press Massachusetts Institute of Technology. New York, John Wiley & Sons, Inc., 1955, 1955.
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