Não informado. (1973). International petroleum abstracts. Institute of Petroleum.
Style de citation Chicago (17e éd.)Não informado. International Petroleum Abstracts. London: Institute of Petroleum, 1973.
Style de citation MLA (8e éd.)Não informado. International Petroleum Abstracts. Institute of Petroleum, 1973.
Attention : ces citations peuvent ne pas être correctes à 100%.