APA (7th ed.) Citation

Hoi Lai Fung. (2004). 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, 2004.

MLA (9th ed.) Citation

Hoi Lai Fung. Improve Your English Though Grammar: Practice. System Publishing House Pte Lte, 2004.

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