Gaya APA

Wittke, W. (1979). Numerical Methods in GeoMechanics Aachen, 1979 Volume 1 . United States of America: A. A. Balkema.

Gaya MLA

Wittke, W.. "Numerical Methods in GeoMechanics Aachen, 1979 Volume 1". United States of America: A. A. Balkema, 1979. Text.