O'Sullivan, R. B., & Maberry, J. O. (1975). Marine trace fossils in the Upper Jurassic Bluff Sandstone, southeastern Utah: A description of newly discovered trace fossils and their significance. U.S. Govt. Print. Off.
Chicago Style (17th ed.) CitationO'Sullivan, Robert Brett, and John O. Maberry. Marine Trace Fossils in the Upper Jurassic Bluff Sandstone, Southeastern Utah: A Description of Newly Discovered Trace Fossils and Their Significance. Washington: U.S. Govt. Print. Off, 1975.
MLA (9th ed.) CitationO'Sullivan, Robert Brett, and John O. Maberry. Marine Trace Fossils in the Upper Jurassic Bluff Sandstone, Southeastern Utah: A Description of Newly Discovered Trace Fossils and Their Significance. U.S. Govt. Print. Off, 1975.
Warning: These citations may not always be 100% accurate.