Gartside, L. (1976). Modern business correspondence (3rd.). Macdonalds & Evans.
芝加哥风格引文Gartside, L. Modern Business Correspondence. 3rd. London: Macdonalds & Evans, 1976.
MLA引文Gartside, L. Modern Business Correspondence. 3rd. Macdonalds & Evans, 1976.
警告：这些引文格式不一定是100％准确.