Lydall, G. .. (1955). A Practical guide to precis writing & indexing. Macdonalds & Evans ltd.
芝加哥风格引文Lydall, G .O. A Practical Guide to Precis Writing & Indexing. London: Macdonalds & Evans ltd, 1955.
MLA引文Lydall, G .O. A Practical Guide to Precis Writing & Indexing. Macdonalds & Evans ltd, 1955.
警告：这些引文格式不一定是100％准确.