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A Conversation between Charles Spearman, Godfrey Thomson, and Edward L. Thorndike: The International Examinations Inquiry Meetings, 1931--1938. History of Psychology (p. 122). (/isis/citation/CBB000774854/) unapi

Article Martin, Oliver (2001)
La Question du réalisme en psychologie: Études d'un débat entre arguments mathématiques et arguments empiriques. Archives Internationales d'Histoire des Sciences (p. 99). (/isis/citation/CBB000340527/) unapi

Book Kimble, Gregory A.; Wertheimer, Michael; White, Charlotte (2000)
Portraits of Pioneers in Psychology, Vol. IV. (/isis/citation/CBB000102421/) unapi

Article Martin, Olivier (1997)
Aux origines des idées factorielles: Des théories aux méthodes statistiques. Histoire & Mesure (pp. 197-250). (/isis/citation/CBB000076143/) unapi

Article Lovie, P.; Lovie, A.D. (1996)
Charles Edward Spearman, F.R.S. (1863-1945). Notes and Records: The Royal Society Journal of the History of Science (pp. 75-88). (/isis/citation/CBB000068190/) unapi

Article Charles Edward Spearman F.R.S. 1863-1945: A commemoration on the 50th anniversary of his death (1995). British Journal of Mathematical and Statistical Psychology (pp. 209-269). (/isis/citation/CBB000072105/) unapi

Article Lovie, A.D.; Lovie, P. (1993)
Charles Spearman, Cyril Burt, and the origins of factor analysis. Journal of the History of the Behavioral Sciences (pp. 308-321). (/isis/citation/CBB000039432/) unapi

Article López Cerezo, José A. (1991)
Human nature as social order: A hundred years of psychometrics. Journal of Social and Biological Structures: Studies in Human Biology (pp. 409-434). (/isis/citation/CBB000030502/) unapi

Article Norton, Bernard (1979)
Charles Spearman and the general factor in intelligence: Genesis and interpretation in the light of sociopersonal considerations. Journal of the History of the Behavioral Sciences (pp. 142-154). (/isis/citation/CBB000026508/) unapi