Roehler, H. W. (1993). Stratigrphiy of the upper cretaceous fox hills sandstones and adjacent parts of the Lewis shale and lance formation, East flank of the rock springs uplift, Southwest wyoming. U.S Government Printing Office.

Roehler, Henry W. Stratigrphiy of the Upper Cretaceous Fox Hills Sandstones and Adjacent Parts of the Lewis Shale and Lance Formation, East Flank of the Rock Springs Uplift, Southwest Wyoming. U.S Government Printing Office, 1993.

Roehler, Henry W. Stratigrphiy of the Upper Cretaceous Fox Hills Sandstones and Adjacent Parts of the Lewis Shale and Lance Formation, East Flank of the Rock Springs Uplift, Southwest Wyoming. U.S Government Printing Office, 1993.