Sheaffer, J. R. (1960). Flood proofing: An element in a flood damage reduction program. Chicago: The University of Chicago.
Παραπομπή Chicago StyleSheaffer, John Richard. Flood Proofing: An Element in a Flood Damage Reduction Program. Chicago: The University of Chicago, 1960.
Παραπομπή MLASheaffer, John Richard. Flood Proofing: An Element in a Flood Damage Reduction Program. Chicago: The University of Chicago, 1960.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.