Não informado. (1961). API Abstracts of Refining Patents. American Petroleum Institute.
Style de citation Chicago (17e éd.)Não informado. API Abstracts of Refining Patents. New York: American Petroleum Institute, 1961.
Style de citation MLA (8e éd.)Não informado. API Abstracts of Refining Patents. American Petroleum Institute, 1961.
Attention : ces citations peuvent ne pas être correctes à 100%.