APA (7e ed.) Bronvermelding

(2012). NFPA 252: Standard methods of fire tests of door assemblies (2012 edition.). National Fire Protection Association.

Chicago (17e ed.) Bronvermelding

NFPA 252: Standard Methods of Fire Tests of Door Assemblies. 2012 edition. Quincy, Massachusetts: National Fire Protection Association, 2012.

MLA (9e ed.) Bronvermelding

NFPA 252: Standard Methods of Fire Tests of Door Assemblies. 2012 edition. National Fire Protection Association, 2012.