APA (7th ed.) Citation

Não informado. (2021). Patent Abstracts. American Petroleum Institute.

Chicago Style (17th ed.) Citation

Não informado. Patent Abstracts. New York: American Petroleum Institute, 2021.

MLA (8th ed.) Citation

Não informado. Patent Abstracts. American Petroleum Institute, 2021.

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