Ravn, J. (1992). Planning and implementation of hydropower projects. Trondheim: Norwegian Institute of Technology.
Παραπομπή Chicago StyleRavn, Jarle. Planning and Implementation of Hydropower Projects. Trondheim: Norwegian Institute of Technology, 1992.
Παραπομπή MLARavn, Jarle. Planning and Implementation of Hydropower Projects. Trondheim: Norwegian Institute of Technology, 1992.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.