APA (7th ed.) Citation

Spector, P. E. (c 1981). Research designs. Sage University papers / Quantitative applications in the social sciences.

Chicago Style (17th ed.) Citation

Spector, Paul E. "Research Designs." Sage University Papers / Quantitative Applications in the Social Sciences c 1981.

MLA (9th ed.) Citation

Spector, Paul E. "Research Designs." Sage University Papers / Quantitative Applications in the Social Sciences, c 1981.

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