Foray, Philippe. ALAIN (1868-1951)(PDF). Prospects: the quarterly review of comparative education (Paris: UNESCO: International Bureau of Education). 1993, XXIII (1/2): 21–37 [2009-04-14]. doi:10.1007/bf02195023. (原始内容存档(PDF)于2020-10-02).
unesco.org
ibe.unesco.org
Foray, Philippe. ALAIN (1868-1951)(PDF). Prospects: the quarterly review of comparative education (Paris: UNESCO: International Bureau of Education). 1993, XXIII (1/2): 21–37 [2009-04-14]. doi:10.1007/bf02195023. (原始内容存档(PDF)于2020-10-02).
web.archive.org
Foray, Philippe. ALAIN (1868-1951)(PDF). Prospects: the quarterly review of comparative education (Paris: UNESCO: International Bureau of Education). 1993, XXIII (1/2): 21–37 [2009-04-14]. doi:10.1007/bf02195023. (原始内容存档(PDF)于2020-10-02).