Fay, R. O. (1983). Copper deposits in sheep pen sandstone (Triassic) in Cimarron County, Oklahoma, and adjacent parts of Colorado and New Mexico. Univ. of Oklahoma.
Chicago-Zitierstil (17. Ausg.)Fay, Robert O. Copper Deposits in Sheep Pen Sandstone (Triassic) in Cimarron County, Oklahoma, and Adjacent Parts of Colorado and New Mexico. Norman: Univ. of Oklahoma, 1983.
MLA-Zitierstil (9. Ausg.)Fay, Robert O. Copper Deposits in Sheep Pen Sandstone (Triassic) in Cimarron County, Oklahoma, and Adjacent Parts of Colorado and New Mexico. Univ. of Oklahoma, 1983.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.