PROCEDING'S... (1980). Proceding's of the tenth world petroleum conggress V - Proceding's.. Heyden.
Čikaški stil citiranja (17. izdanje)PROCEDING'S... Proceding's of the Tenth World Petroleum Conggress V - Proceding's.. Heyden, 1980.
MLA način citiranja (8. izdanje)PROCEDING'S... Proceding's of the Tenth World Petroleum Conggress V - Proceding's.. Heyden, 1980.
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