Cita APA (7a ed.)

National Fire Protection Association. (2011). NFPA 2: Hydrogen Technologies Code. National Fire Protection Association.

Cita Chicago Style (17a ed.)

National Fire Protection Association. NFPA 2: Hydrogen Technologies Code. Quincy: National Fire Protection Association, 2011.

Cita MLA (9a ed.)

National Fire Protection Association. NFPA 2: Hydrogen Technologies Code. National Fire Protection Association, 2011.