Australian Tunnelling Conference Melbourne. (1981). Papers presented at the Fourth Australian Tunnelling Conference, March 1981. Australasien Inst. of Mining and Metallurgy.
Chicago-Zitierstil (17. Ausg.)Australian Tunnelling Conference Melbourne. Papers Presented at the Fourth Australian Tunnelling Conference, March 1981. Parkville, Victoria: Australasien Inst. of Mining and Metallurgy, 1981.
MLA-Zitierstil (9. Ausg.)Australian Tunnelling Conference Melbourne. Papers Presented at the Fourth Australian Tunnelling Conference, March 1981. Australasien Inst. of Mining and Metallurgy, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.