APA
League of Nation (Economic Intelligence Service), League of Nation (Economic Intelligence Service), . (1939). Statistical Year Book of the League of Nation. Geneva: League of Nation USA.
Chicago
League of Nation (Economic Intelligence Service), League of Nation (Economic Intelligence Service), . 1939. Statistical Year Book of the League of Nation. Geneva: League of Nation USA.
Harvard
League of Nation (Economic Intelligence Service), League of Nation (Economic Intelligence Service), . (1939). Statistical Year Book of the League of Nation. Geneva: League of Nation USA.
MLA
League of Nation (Economic Intelligence Service), League of Nation (Economic Intelligence Service), . Statistical Year Book of the League of Nation. Geneva: League of Nation USA. 1939.
