APA (7th ed.) Citation

Opinion Research Service (U.S.). (1981). American public opinion index. Opinion Research Service.

Chicago Style (17th ed.) Citation

Opinion Research Service (U.S.). American Public Opinion Index. Louisville, KY: Opinion Research Service, 1981.

MLA (9th ed.) Citation

Opinion Research Service (U.S.). American Public Opinion Index. Opinion Research Service, 1981.

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