Sachdeva, s. (2010). General knowledge yearbook 2010. Competition Review pvt. Ltd.
芝加哥风格引文Sachdeva, surendrakumar. General Knowledge Yearbook 2010. Delhi: Competition Review pvt. Ltd, 2010.
MLA引文Sachdeva, surendrakumar. General Knowledge Yearbook 2010. Competition Review pvt. Ltd, 2010.
警告：这些引文格式不一定是100％准确.