Foray, Philippe (). „ALAIN (1868-1951)”(PDF). Prospects: the quarterly review of comparative education. Paris: UNESCO: International Bureau of Education. XXIII (1/2): 21–37. doi:10.1007/bf02195023. Arhivat din original(PDF) la . Accesat în .
Foray, Philippe (). „ALAIN (1868-1951)”(PDF). Prospects: the quarterly review of comparative education. Paris: UNESCO: International Bureau of Education. XXIII (1/2): 21–37. doi:10.1007/bf02195023. Arhivat din original(PDF) la . Accesat în .
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Foray, Philippe (). „ALAIN (1868-1951)”(PDF). Prospects: the quarterly review of comparative education. Paris: UNESCO: International Bureau of Education. XXIII (1/2): 21–37. doi:10.1007/bf02195023. Arhivat din original(PDF) la . Accesat în .