Engineering rock mechanics :
[pt. 1] an introduction to the principles /
John A. Hudson and John P. Harrison.

APA Citation

Hudson, J. A. (John A.)., Harrison, J. P. (1997). Engineering rock mechanics: [pt. 1] an introduction to the principles. Oxford, UK: Pergamon.

MLA Citation

Hudson, J. A. (John A.), 1940-, and John P Harrison. Engineering Rock Mechanics: [pt. 1] an Introduction to the Principles. Oxford, UK: Pergamon, 1997.

Warning: These citations may not always be complete (especially for serials).