Cita APA (7a ed.)

Hartmann, B. E. (1967). Rock mechanics instrumentation for tunnel construction. Terrametrics, Inc..

Cita Chicago Style (17a ed.)

Hartmann, Burt E. Rock Mechanics Instrumentation for Tunnel Construction. Golden, Colo.: Terrametrics, Inc., 1967.

Cita MLA (8a ed.)

Hartmann, Burt E. Rock Mechanics Instrumentation for Tunnel Construction. Terrametrics, Inc., 1967.