Frater, H. (1998). Natural disasters: Cause, course, effect, simulation. Springer electronic media.
Chicago Style aipamenaFrater, Harald. Natural Disasters: Cause, Course, Effect, Simulation. Berlin: Springer electronic media, 1998.
MLA aipamenaFrater, Harald. Natural Disasters: Cause, Course, Effect, Simulation. Springer electronic media, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.