Cita APA (7th ed.)

U.S. Symposium on Rock Mechanics University of Minnesota, Cundall, P. A., Sterling, R. L., & Starfield, A. M. (1988). Key questions in rock mechanics: Proceedings of the 29th U.S. symposium. A.A. Balkema.

Cita Chicago (17th ed.)

U.S. Symposium on Rock Mechanics University of Minnesota, P. A. Cundall, R. L. Sterling, i A. M. Starfield. Key Questions in Rock Mechanics: Proceedings of the 29th U.S. Symposium. Rotterdam ; Brookfield: A.A. Balkema, 1988.

Cita MLA (8th ed.)

U.S. Symposium on Rock Mechanics University of Minnesota, et al. Key Questions in Rock Mechanics: Proceedings of the 29th U.S. Symposium. A.A. Balkema, 1988.