APA
League of Nations. General Conference on Communication and Transit. 1 (1921 : Barcelona), .Verbatim reports and texts etc. 3 in 1. : .
Chicago
League of Nations. General Conference on Communication and Transit. 1 (1921 : Barcelona), .Verbatim reports and texts etc. 3 in 1. : .
Harvard
League of Nations. General Conference on Communication and Transit. 1 (1921 : Barcelona), .Verbatim reports and texts etc. 3 in 1. : .
MLA
League of Nations. General Conference on Communication and Transit. 1 (1921 : Barcelona), .: . .
