Spector, P. E. (1981). Research designs. Sage University papers / Quantitative applications in the social sciences.
Chicago Style (17th ed.) CitationSpector, Paul E. "Research Designs." Sage University Papers / Quantitative Applications in the Social Sciences 1981.
MLA (8th ed.) CitationSpector, Paul E. "Research Designs." Sage University Papers / Quantitative Applications in the Social Sciences, 1981.
Warning: These citations may not always be 100% accurate.