(1949). National building code: An ordinance providing for fire limits, and regulations governing the construction, alteration, equipment, or removal of buildings or structures (1949 edition.). New York: National Board of Fire Underwriters.
Παραπομπή Chicago StyleNational Building Code: An Ordinance Providing for Fire Limits, and Regulations Governing the Construction, Alteration, Equipment, or Removal of Buildings or Structures. 1949 edition. New York: National Board of Fire Underwriters, 1949.
Παραπομπή MLANational Building Code: An Ordinance Providing for Fire Limits, and Regulations Governing the Construction, Alteration, Equipment, or Removal of Buildings or Structures. 1949 edition. New York: National Board of Fire Underwriters, 1949.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.