APA (7th ed.) Citation

Quek, S. G. (2015). Engel conditions in certain groups.

Chicago Style (17th ed.) Citation

Quek, Shio Gai. Engel Conditions in Certain Groups. 2015.

MLA (8th ed.) Citation

Quek, Shio Gai. Engel Conditions in Certain Groups. 2015.

Warning: These citations may not always be 100% accurate.