APA
League of Nations. General Conference on Communication and Transit. 2 (1923 : Geneva), .Official instruments approved by the Conference. : .
Chicago
League of Nations. General Conference on Communication and Transit. 2 (1923 : Geneva), .Official instruments approved by the Conference. : .
Harvard
League of Nations. General Conference on Communication and Transit. 2 (1923 : Geneva), .Official instruments approved by the Conference. : .
MLA
League of Nations. General Conference on Communication and Transit. 2 (1923 : Geneva), .: . .
