APA aipamena

Snedecor, G. W. (1989). Statistical methods. Iowa: Iowa State University Press.

Chicago Style aipamena

Snedecor, George W. Statistical Methods. Iowa: Iowa State University Press, 1989.

MLA aipamena

Snedecor, George W. Statistical Methods. Iowa: Iowa State University Press, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.