APA引文

Independent Petroleum Association of America. (1971). Petroleum independent. Independent Petroleum Association of America].

Chicago Style (17th ed.) Citation

Independent Petroleum Association of America. Petroleum Independent. [Tulsa, Okla.: Independent Petroleum Association of America], 1971.

MLA引文

Independent Petroleum Association of America. Petroleum Independent. Independent Petroleum Association of America], 1971.

警告：这些引文格式不一定是100％准确.