APA (7th ed.) Zitazioa

SNEDECOR, G. W. (1967). Statistical methods. Iowa State University Press.

Chicago Style (17th ed.) Zitazioa

SNEDECOR, George W. Statistical Methods. Iowa: Iowa State University Press, 1967.

MLA (9th ed.) Zitazioa

SNEDECOR, George W. Statistical Methods. Iowa State University Press, 1967.