Independent Petroleum Association of America. The Oil producing industry in your state. Petroleum Independent Publishers.
Style de citation Chicago (17e éd.)Independent Petroleum Association of America. The Oil Producing Industry in Your State. [Washington: Petroleum Independent Publishers.
Style de citation MLA (8e éd.)Independent Petroleum Association of America. The Oil Producing Industry in Your State. Petroleum Independent Publishers.
Attention : ces citations peuvent ne pas être correctes à 100%.