APA
(1930). World conference on adult education combridge 1923. London: World Association Adult Education.
Chicago
1930. World conference on adult education combridge 1923. London: World Association Adult Education.
Harvard
(1930). World conference on adult education combridge 1923. London: World Association Adult Education.
MLA
World conference on adult education combridge 1923. London: World Association Adult Education. 1930.
