APA استشهاد

Cochran, W. G., & Snedcor, G. W. (1937). Statistical methods (6.). Oxford & IBH publishing co.

استشهاد بنمط شيكاغو

Cochran, William G., و George W. Snedcor. Statistical Methods. 6. Newdelhi: Oxford & IBH publishing co, 1937.

MLA استشهاد

Cochran, William G., و George W. Snedcor. Statistical Methods. 6. Oxford & IBH publishing co, 1937.