Cita APA (7th ed.)

Snedecor, G. W., & Cochran, W. G. (1967). Statistical methods (6a. ed.). Iowa State University Press.

Cita Chicago (17th ed.)

Snedecor, George Waddel, i William Gemmell Cochran. Statistical Methods. 6a. ed. Ames: Iowa State University Press, 1967.

Cita MLA (9th ed.)

Snedecor, George Waddel, i William Gemmell Cochran. Statistical Methods. 6a. ed. Iowa State University Press, 1967.