Willcox, Walter F. (1938). „The Founder of Statistics”. Review of the International Statistical Institute. 5 (4): 321—328. JSTOR1400906. doi:10.2307/1400906.
Willcox, Walter F. (1938). „The Founder of Statistics”. Review of the International Statistical Institute. 5 (4): 321—328. JSTOR1400906. doi:10.2307/1400906.