APA (7th ed.) Citation

Obert, L., & Duvall, W. I. (1967). Rock mechanics and the design of structures in rocks. Wiley.

Chicago Style (17th ed.) Citation

Obert, Leonard, and Wilbur I. Duvall. Rock Mechanics and the Design of Structures in Rocks. New York ; Sydney: Wiley, 1967.

MLA (8th ed.) Citation

Obert, Leonard, and Wilbur I. Duvall. Rock Mechanics and the Design of Structures in Rocks. Wiley, 1967.