Cita APA (7a ed.)

Bell, F. G. (1992). Engineering in rock masses. Butterworth-Heinemann.

Cita Chicago Style (17a ed.)

Bell, F. G. Engineering in Rock Masses. Oxford: Butterworth-Heinemann, 1992.

Cita MLA (8a ed.)

Bell, F. G. Engineering in Rock Masses. Butterworth-Heinemann, 1992.