APA (7th ed.) Citation

American Petroleum Institute. Division of Production. Standardization bulletin. Division of Standardization, American Petroleum Institute.

Chicago Style (17th ed.) Citation

American Petroleum Institute. Division of Production. Standardization Bulletin. Dallas, Tex.: Division of Standardization, American Petroleum Institute.

MLA (9th ed.) Citation

American Petroleum Institute. Division of Production. Standardization Bulletin. Division of Standardization, American Petroleum Institute.

Warning: These citations may not always be 100% accurate.