Não informado. (2021). Literature Abstracts. American Petroleum Institute.
Chicagoスタイル(17版)引用形式Não informado. Literature Abstracts. New York: American Petroleum Institute, 2021.
MLA(8版)引用形式Não informado. Literature Abstracts. American Petroleum Institute, 2021.
警告: この引用は必ずしも正確ではありません.