Não informado. (1970). Bulletin of the International Association of Engineering Geology. Laboratoire Central des Ponts et Chaussées.
Chicago-viite (17. p.)Não informado. Bulletin of the International Association of Engineering Geology. Paris: Laboratoire Central des Ponts et Chaussées, 1970.
MLA-viite (8. p.)Não informado. Bulletin of the International Association of Engineering Geology. Laboratoire Central des Ponts et Chaussées, 1970.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.