APA (7e ed.) Bronvermelding

Não informado. (1971). Abstracts of Petroleum Substitutes. American Petroleum Institute.

Chicago (17e ed.) Bronvermelding

Não informado. Abstracts of Petroleum Substitutes. New York: American Petroleum Institute, 1971.

MLA (8e ed.) Bronvermelding

Não informado. Abstracts of Petroleum Substitutes. American Petroleum Institute, 1971.

Let op: Deze citaties zijn niet altijd 100% accuraat.