Competition Review. (2011). General Knowledge year book 2011. Competition Review Pvt. Ltd.
芝加哥风格引文Competition Review. General Knowledge Year Book 2011. New Delhi: Competition Review Pvt. Ltd, 2011.
MLA引文Competition Review. General Knowledge Year Book 2011. Competition Review Pvt. Ltd, 2011.
警告：这些引文格式不一定是100％准确.