Não informado. (1999). Contributions to Geology. University of Wyoming, Department of Geology.
Chicago-Zitierstil (17. Ausg.)Não informado. Contributions to Geology. Laramie, Wyo: University of Wyoming, Department of Geology, 1999.
MLA-Zitierstil (8. Ausg.)Não informado. Contributions to Geology. University of Wyoming, Department of Geology, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.