Kempfert, H., & Gebreselassie, B. (2006). Excavations and foundations in soft soils. Springer.
Chicago Style aipamenaKempfert, Hans-Georg, and Berhane Gebreselassie. Excavations and Foundations in Soft Soils. Berlin, Heidelberg: Springer, 2006.
MLA aipamenaKempfert, Hans-Georg, and Berhane Gebreselassie. Excavations and Foundations in Soft Soils. Springer, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.