APA (7th ed.) Citation

(1973). Radiometric ages of igneous rocks from Pima, Santa Cruz, and Cochise Counties, southeastern Arizona. U.S. Gov. Print. Off.

Chicago Style (17th ed.) Citation

Radiometric Ages of Igneous Rocks from Pima, Santa Cruz, and Cochise Counties, Southeastern Arizona. Washington: U.S. Gov. Print. Off, 1973.

MLA (9th ed.) Citation

Radiometric Ages of Igneous Rocks from Pima, Santa Cruz, and Cochise Counties, Southeastern Arizona. U.S. Gov. Print. Off, 1973.