Federer, W. T. (1977). Experimental Design (1st edition.). Oxford and IBH.
Cita Chicago (17th ed.)Federer, Walter T. Experimental Design. 1st edition. New Delhi: Oxford and IBH, 1977.
Cita MLA (9th ed.)Federer, Walter T. Experimental Design. 1st edition. Oxford and IBH, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.