Não informado. (1910). Oil & Gas Journal. Pennwell Publishing.
Style de citation Chicago (17e éd.)Não informado. Oil & Gas Journal. Tulsa, Okla: Pennwell Publishing, 1910.
Style de citation MLA (8e éd.)Não informado. Oil & Gas Journal. Pennwell Publishing, 1910.
Attention : ces citations peuvent ne pas être correctes à 100%.