APA Citation

Wong Hock Sun, T. (2008). Chalenging mathematics for O level. Singapore: Redspot Publishing.

Chicago Style Citation

Wong Hock Sun, Thomas. Chalenging Mathematics for O Level. Singapore: Redspot Publishing, 2008.

MLA Citation

Wong Hock Sun, Thomas. Chalenging Mathematics for O Level. Singapore: Redspot Publishing, 2008.

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