American National Standards Institute. (2012). NFPA 257: Standard on fire test for window and glass block assemblies (2012 edition.). National Fire Protection Association.
Chicago-Zitierstil (17. Ausg.)American National Standards Institute. NFPA 257: Standard on Fire Test for Window and Glass Block Assemblies. 2012 edition. Quincy, Massachusetts: National Fire Protection Association, 2012.
MLA-Zitierstil (9. Ausg.)American National Standards Institute. NFPA 257: Standard on Fire Test for Window and Glass Block Assemblies. 2012 edition. National Fire Protection Association, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.