Stillborg, B. (1986). Professional users handbook for rock bolting. Trans Tech.
Chicago Style aipamenaStillborg, Bengt. Professional Users Handbook for Rock Bolting. Clausthal-Zellerfeld, West Germany: Trans Tech, 1986.
MLA aipamenaStillborg, Bengt. Professional Users Handbook for Rock Bolting. Trans Tech, 1986.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.