Não informado. Association of Engineering Geologists newsletter. Association of Engineering Geologists.
Chicago-Zitierstil (17. Ausg.)Não informado. Association of Engineering Geologists Newsletter. Lawrence, Kan: Association of Engineering Geologists.
MLA-Zitierstil (8. Ausg.)Não informado. Association of Engineering Geologists Newsletter. Association of Engineering Geologists.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.