Cita APA (7a ed.)
(1991). Proceeding of the 35 th International Conference on Petroleum. Slovnaft.
Cita Chicago Style (17a ed.)
Proceeding of the 35 Th International Conference on Petroleum. Bratislava: Slovnaft, 1991.
Cita MLA (9a ed.)
Proceeding of the 35 Th International Conference on Petroleum. Slovnaft, 1991.
Precaución: Estas citas no son 100% exactas.