APA

Freethey G. W., Cordy G. E., . (1991). Geohydrology of Mesozoic rocks in the Upper Colorado River Basin in Arizona, Colorado, New Mexico, Utah, and Wyoming, excluding the San Juan Basin. Washington, DC: U.S. Gov. Print. Off.

Chicago

Freethey Geoffrey W, Cordy Gail E, . 1991. Geohydrology of Mesozoic rocks in the Upper Colorado River Basin in Arizona, Colorado, New Mexico, Utah, and Wyoming, excluding the San Juan Basin. Washington, DC: U.S. Gov. Print. Off.

Harvard

Freethey G. W., Cordy G. E., . (1991). Geohydrology of Mesozoic rocks in the Upper Colorado River Basin in Arizona, Colorado, New Mexico, Utah, and Wyoming, excluding the San Juan Basin. Washington, DC: U.S. Gov. Print. Off.

MLA

Freethey Geoffrey W, Cordy Gail E, . Geohydrology of Mesozoic rocks in the Upper Colorado River Basin in Arizona, Colorado, New Mexico, Utah, and Wyoming, excluding the San Juan Basin. Washington, DC: U.S. Gov. Print. Off. 1991.