Oliveira, R. (1994). Proceedings Seventh International Congress International Association of Engineering Geology : =: Comptes-rendus Septieme Congres Internatioanal Association Internationale de Geologie de l' Ingenieur / : 5-9 September 1994, Lisboa, Portugal =. Rotterdam: A. A. Balkema.
Παραπομπή Chicago StyleOliveira, R. Proceedings Seventh International Congress International Association of Engineering Geology : =: Comptes-rendus Septieme Congres Internatioanal Association Internationale De Geologie De L' Ingenieur / : 5-9 September 1994, Lisboa, Portugal =. Rotterdam: A. A. Balkema, 1994.
Παραπομπή MLAOliveira, R. Proceedings Seventh International Congress International Association of Engineering Geology : =: Comptes-rendus Septieme Congres Internatioanal Association Internationale De Geologie De L' Ingenieur / : 5-9 September 1994, Lisboa, Portugal =. Rotterdam: A. A. Balkema, 1994.