Quek, S. G. (2015). Engel conditions in certain groups.
Chicago Style (17th ed.) CitationQuek, Shio Gai. Engel Conditions in Certain Groups. 2015.
MLA (8th ed.) CitationQuek, Shio Gai. Engel Conditions in Certain Groups. 2015.
Warning: These citations may not always be 100% accurate.