International Tunnelling Association. (1981). Advances in Tunnelling Technology and Subsurface Use. Pergamon Press.
Chicago-referens (17:e uppl.)International Tunnelling Association. Advances in Tunnelling Technology and Subsurface Use. Oxford, Inglaterra: Pergamon Press, 1981.
MLA-referens (8:e uppl.)International Tunnelling Association. Advances in Tunnelling Technology and Subsurface Use. Pergamon Press, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.