(1973). Proceedings of the 8th Canadian rock mechanics symposium, Toronto, November-December 1972. Ottawa: Mines Branch.
Παραπομπή Chicago StyleProceedings of the 8th Canadian Rock Mechanics Symposium, Toronto, November-December 1972. Ottawa: Mines Branch, 1973.
Παραπομπή MLAProceedings of the 8th Canadian Rock Mechanics Symposium, Toronto, November-December 1972. Ottawa: Mines Branch, 1973.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.