Citation Formats

MLA

Murphy, Robert Emmett. A Petrographic Study of the Lower Hygiene Sandstone Members of the Upper Cretaceous Pierre Shales of Northeastern Colorado.

APA

Murphy, R. A Petrographic Study of the Lower Hygiene Sandstone Members of the Upper Cretaceous Pierre Shales of Northeastern Colorado.

Chicago

Murphy, Robert Emmett. A Petrographic Study of the Lower Hygiene Sandstone Members of the Upper Cretaceous Pierre Shales of Northeastern Colorado.