Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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