Não informado. (1956). Preprints. American Chemical Society, Division of Petroleum Chemistry.
Cita Chicago Style (17a ed.)Não informado. Preprints. Washington: American Chemical Society, Division of Petroleum Chemistry, 1956.
Cita MLA (8a ed.)Não informado. Preprints. American Chemical Society, Division of Petroleum Chemistry, 1956.
Precaución: Estas citas no son 100% exactas.