APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Obert, L., and W. I. Duvall. Rock Mechanics and the Design of Structures in Rock / by L. Obert and W.I. Duvall. Wiley, 1967.

MLA (9th ed.) Citation

Obert, L., and W. I. Duvall. Rock Mechanics and the Design of Structures in Rock / by L. Obert and W.I. Duvall. Wiley, 1967.

Warning: These citations may not always be 100% accurate.