APA (7th ed.) Citation

RPT Economic Studies Group, Purvin & Gertz Inc, & Papua New Guinea. (1981). Oil supply options study: Final report. Dept. of Minerals and Energy.

Chicago Style (17th ed.) Citation

RPT Economic Studies Group, Purvin & Gertz Inc, and Papua New Guinea. Oil Supply Options Study: Final Report. [Port Moresby]: Dept. of Minerals and Energy, 1981.

MLA (9th ed.) Citation

RPT Economic Studies Group, et al. Oil Supply Options Study: Final Report. Dept. of Minerals and Energy, 1981.