American National Standards Institute. (2012). NFPA 257: Standard on fire test for window and glass block assemblies (2012 edition.). National Fire Protection Association.
Citazione stile Chigago Style (17a edizione)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.
Citatione MLA (9a ed.)American National Standards Institute. NFPA 257: Standard on Fire Test for Window and Glass Block Assemblies. 2012 edition. National Fire Protection Association, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.