APA (7th ed.) Citation

Não informado. (1969). Abstracts. Institute of Petroleum.

Chicago Style (17th ed.) Citation

Não informado. Abstracts. London: Institute of Petroleum, 1969.

MLA (8th ed.) Citation

Não informado. Abstracts. Institute of Petroleum, 1969.

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