Não informado. (1968). Abstracts of Petroleum Substitutes. American Petroleum Institute.
Chicagoスタイル(17版)引用形式Não informado. Abstracts of Petroleum Substitutes. New York: American Petroleum Institute, 1968.
MLA(8版)引用形式Não informado. Abstracts of Petroleum Substitutes. American Petroleum Institute, 1968.
警告: この引用は必ずしも正確ではありません.