Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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