Gaya APA

Aldorf, J., Exner, K. (1986). Mine Openings : Stability and Support Development in Geotechnical Engineering Volume 40 . : Elsevier.

Gaya MLA

Aldorf, J., Exner, K.. "Mine Openings : Stability and Support Development in Geotechnical Engineering Volume 40". : Elsevier, 1986. Text.