Quek, S. G. (2015). Engel conditions in certain groups.
Chicago Style (17th ed.) CitationQuek, Shio Gai. Engel Conditions in Certain Groups. 2015.
MLA引文Quek, Shio Gai. Engel Conditions in Certain Groups. 2015.
警告：这些引文格式不一定是100％准确.
APA引文