Engelmann, H. O. (1966). Essays in social theory and social organization. W. C. Brown Book Co..
芝加哥风格引文Engelmann, Hugo O. Essays in Social Theory and Social Organization. Dubuque, Iowa: W. C. Brown Book Co., 1966.
MLA引文Engelmann, Hugo O. Essays in Social Theory and Social Organization. W. C. Brown Book Co., 1966.
警告：这些引文格式不一定是100％准确.