National Fire Protection Association. (2020). NFPA 2: Hydrogen technologies code 2020 (2020 edition.). National Fire Protection Association.
Chicagoスタイル(17版)引用形式National Fire Protection Association. NFPA 2: Hydrogen Technologies Code 2020. 2020 edition. Quincy, Mass., United States: National Fire Protection Association, 2020.
MLA(9版)引用形式National Fire Protection Association. NFPA 2: Hydrogen Technologies Code 2020. 2020 edition. National Fire Protection Association, 2020.
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