APA

[Balkema], Rock mechanics. U.S. Symposium 26, . (1985). Research and engineering applications in rock masses. 26th U.S. symposium on rock mechanics, Rapid City, South Dakota, 26-28 June 1985. Proceedings. Vol 1-2. Rotterdam: [Balkema].

Chicago

[Balkema], Rock mechanics. U.S. Symposium 26, . 1985. Research and engineering applications in rock masses. 26th U.S. symposium on rock mechanics, Rapid City, South Dakota, 26-28 June 1985. Proceedings. Vol 1-2. Rotterdam: [Balkema].

Harvard

[Balkema], Rock mechanics. U.S. Symposium 26, . (1985). Research and engineering applications in rock masses. 26th U.S. symposium on rock mechanics, Rapid City, South Dakota, 26-28 June 1985. Proceedings. Vol 1-2. Rotterdam: [Balkema].

MLA

[Balkema], Rock mechanics. U.S. Symposium 26, . Research and engineering applications in rock masses. 26th U.S. symposium on rock mechanics, Rapid City, South Dakota, 26-28 June 1985. Proceedings. Vol 1-2. Rotterdam: [Balkema]. 1985.