APA (7th ed.) Citation

Hoi Lai Fung. (2006). Improve your english though grammar: Practice. System publishing House Pte Lte.

Chicago Style (17th ed.) Citation

Hoi Lai Fung. Improve Your English Though Grammar: Practice. Singapore: System publishing House Pte Lte, 2006.

MLA (9th ed.) Citation

Hoi Lai Fung. Improve Your English Though Grammar: Practice. System publishing House Pte Lte, 2006.

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