APA (7th ed.) Zitazioa
Cook, T. D., & Campbell, D. T. (1979). Quasi-experimentation: Design & analysis issues for field settings. Houghton Mifflin Company.
Chicago Style (17th ed.) Zitazioa
Cook, Thomas D., eta Donald T. Campbell. Quasi-experimentation: Design & Analysis Issues for Field Settings. Boston: Houghton Mifflin Company, 1979.
MLA (9th ed.) Zitazioa
Cook, Thomas D., eta Donald T. Campbell. Quasi-experimentation: Design & Analysis Issues for Field Settings. Houghton Mifflin Company, 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.