APA aipamena

Snedecor, G. W., & Cochran, W. G. (1967). Statistical methods (6th ed.). Oxford & IBH.

Chicago Style aipamena

Snedecor, George W., and William G. Cochran. Statistical Methods. 6th ed. Oxford & IBH, 1967.

MLA aipamena

Snedecor, George W., and William G. Cochran. Statistical Methods. 6th ed. Oxford & IBH, 1967.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.