Johnsen, J. E. (1922). Selected articles on social insurance. H.W. Wilson.
芝加哥风格引文Johnsen, Julia E. Selected Articles on Social Insurance. New York, N.Y.: H.W. Wilson, 1922.
MLA引文Johnsen, Julia E. Selected Articles on Social Insurance. H.W. Wilson, 1922.
警告：这些引文格式不一定是100％准确.