Gill, J. R., & Cobban, W. A. (1966). The Red Bird section of the upper Cretaceous Pierre shale in Wyoming. U.S. Govt. Print. Off.
Chicago Style (17th ed.) CitationGill, James R., and William A. Cobban. The Red Bird Section of the Upper Cretaceous Pierre Shale in Wyoming. Washington: U.S. Govt. Print. Off, 1966.
MLA (9th ed.) CitationGill, James R., and William A. Cobban. The Red Bird Section of the Upper Cretaceous Pierre Shale in Wyoming. U.S. Govt. Print. Off, 1966.
Warning: These citations may not always be 100% accurate.