APA (7th ed.) Citation

Organisation of the Petroleum Exporting Countries [Viena]. (1980). Annual report 1998. OPEC.

Chicago Style (17th ed.) Citation

Organisation of the Petroleum Exporting Countries [Viena]. Annual Report 1998. Viena: OPEC, 1980.

MLA (9th ed.) Citation

Organisation of the Petroleum Exporting Countries [Viena]. Annual Report 1998. OPEC, 1980.

Warning: These citations may not always be 100% accurate.