League of Nations. (1925). Official vital statistics of the Kingdom of Spain. s.n.
芝加哥风格引文League of Nations. Official Vital Statistics of the Kingdom of Spain. Geneva: s.n, 1925.
MLA引文League of Nations. Official Vital Statistics of the Kingdom of Spain. s.n, 1925.
警告：这些引文格式不一定是100％准确.