APA
Allen F. H., Seba R. D., Oil & Gas Consultants International, Seba R. D. & Oil & Gas Consultants International. (1993). Economics of worldwide petroleum production. Tulsa, Oklahoma: OGCI Publications.
Chicago
Allen Fraser H, Seba Richard D, Oil & Gas Consultants International, Seba Richard D and Oil & Gas Consultants International. 1993. Economics of worldwide petroleum production. Tulsa, Oklahoma: OGCI Publications.
Harvard
Allen F. H., Seba R. D., Oil & Gas Consultants International, Seba R. D. and Oil & Gas Consultants International. (1993). Economics of worldwide petroleum production. Tulsa, Oklahoma: OGCI Publications.
MLA
Allen Fraser H, Seba Richard D, Oil & Gas Consultants International, Seba Richard D and Oil & Gas Consultants International. Economics of worldwide petroleum production. Tulsa, Oklahoma: OGCI Publications. 1993.