APA (7th ed.) Zitazioa
Popham, W. J., & Sirotnik, K. A. (1973). Educational statistics: Use and interpretation (2nd ed.). Harper and Row.
Chicago Style (17th ed.) Zitazioa
Popham, W. James, eta Kenneth A. Sirotnik. Educational Statistics: Use and Interpretation. 2nd ed. New York: Harper and Row, 1973.
MLA (9th ed.) Zitazioa
Popham, W. James, eta Kenneth A. Sirotnik. Educational Statistics: Use and Interpretation. 2nd ed. Harper and Row, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.