Johnson, R. A., & Bhattacharyya, G. K. (2001). Statistics: Principles and methods (4th ed.). New York: John Wiley & Sons.
Παραπομπή Chicago StyleJohnson, Richard A., and Gouri K. Bhattacharyya. Statistics: Principles and Methods. 4th ed. New York: John Wiley & Sons, 2001.
Παραπομπή MLAJohnson, Richard A., and Gouri K. Bhattacharyya. Statistics: Principles and Methods. 4th ed. New York: John Wiley & Sons, 2001.
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