Não informado. (1961). Petroleum Intelligence Weekly. Petroleum Intellegence Weekly.
Style de citation Chicago (17e éd.)Não informado. Petroleum Intelligence Weekly. New York: Petroleum Intellegence Weekly, 1961.
Style de citation MLA (8e éd.)Não informado. Petroleum Intelligence Weekly. Petroleum Intellegence Weekly, 1961.
Attention : ces citations peuvent ne pas être correctes à 100%.