Nelson, W. L. (1959). The refiners's notebook. Oil and Gas Journal.
Cita Chicago Style (17a ed.)Nelson, W. L. The Refiners's Notebook. [S.l.]: Oil and Gas Journal, 1959.
Cita MLA (8a ed.)Nelson, W. L. The Refiners's Notebook. Oil and Gas Journal, 1959.
Precaución: Estas citas no son 100% exactas.