APA (7th ed.) Citation

Keyes, C. R. (1918). Geologic structure of Sierra del Oro, in New Mexico. Engineering & Mining Journal (00958948), 106, 494.

Chicago Style (17th ed.) Citation

Keyes, C. R. "Geologic Structure of Sierra Del Oro, in New Mexico." Engineering & Mining Journal (00958948) 106 (1918): 494.

MLA (9th ed.) Citation

Keyes, C. R. "Geologic Structure of Sierra Del Oro, in New Mexico." Engineering & Mining Journal (00958948), vol. 106, 1918, p. 494.