SpringerLink (Online service), Hack, R., Azzam, R., & Charlier, R. (2004). Engineering Geology for Infrastructure Planning in Europe: A European Perspective (1st ed. 2004.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/b93922
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Robert Hack, Rafig Azzam, και Robert Charlier. Engineering Geology for Infrastructure Planning in Europe: A European Perspective. 1st ed. 2004. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2004. https://doi.org/10.1007/b93922.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Engineering Geology for Infrastructure Planning in Europe: A European Perspective. 1st ed. 2004. Springer Berlin Heidelberg : Imprint: Springer, 2004. https://doi.org/10.1007/b93922.
