APA

Rock mechanics. Symposium 14 U. P. P. J. 1. P. [., . (1973). New horizons in rock mechanics. New York, NY: Rock mechanics. Symposium 14, University Park, Pennsylvania, June 1972. Proceedings [ASCE].

Chicago

Rock mechanics. Symposium 14 University Park Pennsylvania June 1972 Proceedings [ASCE], . 1973. New horizons in rock mechanics. New York, NY: Rock mechanics. Symposium 14, University Park, Pennsylvania, June 1972. Proceedings [ASCE].

Harvard

Rock mechanics. Symposium 14 U. P. P. J. 1. P. [., . (1973). New horizons in rock mechanics. New York, NY: Rock mechanics. Symposium 14, University Park, Pennsylvania, June 1972. Proceedings [ASCE].

MLA

Rock mechanics. Symposium 14 University Park Pennsylvania June 1972 Proceedings [ASCE], . New horizons in rock mechanics. New York, NY: Rock mechanics. Symposium 14, University Park, Pennsylvania, June 1972. Proceedings [ASCE]. 1973.