APA (7th ed.) Citation

Koh Soo Ling & Tan Siew Lui. (2006). Grammar made easy (Third Edition.). Prentice Hall.

Chicago Style (17th ed.) Citation

Koh Soo Ling and Tan Siew Lui. Grammar Made Easy. Third Edition. Petaling Jaya: Prentice Hall, 2006.

MLA (9th ed.) Citation

Koh Soo Ling and Tan Siew Lui. Grammar Made Easy. Third Edition. Prentice Hall, 2006.