Richard Rempel (1979). “From Imperialism to Free Trade: Couturat, Halevy and Russell's First Crusade”. 《Journal of the History of Ideas》 (University of Pennsylvania Press) 40 (3): 423–443. doi:10.2307/2709246. ISSN0022-5037. JSTOR2709246.
Richard Rempel (1979). “From Imperialism to Free Trade: Couturat, Halevy and Russell's First Crusade”. 《Journal of the History of Ideas》 (University of Pennsylvania Press) 40 (3): 423–443. doi:10.2307/2709246. ISSN0022-5037. JSTOR2709246.
links.jstor.org
Griffin, Nicholas; Albert C. Lewis. “Bertrand Russell's Mathematical Education”. 《Notes and Records of the Royal Society of London, Vol. 44, No. 1.》. 51–71쪽. 2007년 11월 8일에 확인함.더 이상 지원되지 않는 변수를 사용함 (도움말)(구독 필요)
O'Connor, J. J.; E. F. Robertson (2003년 10월). “Alfred North Whitehead”. School of Mathematics and Statistics, University of St Andrews, Scotland. 2007년 11월 8일에 확인함.더 이상 지원되지 않는 변수를 사용함 (도움말)
Richard Rempel (1979). “From Imperialism to Free Trade: Couturat, Halevy and Russell's First Crusade”. 《Journal of the History of Ideas》 (University of Pennsylvania Press) 40 (3): 423–443. doi:10.2307/2709246. ISSN0022-5037. JSTOR2709246.