APA (7th ed.) Citation

Leong, L. B. (2005). Essential Aids in english language items and usage. Bright Publications Sdn.Bhd..

Chicago Style (17th ed.) Citation

Leong, Lee Boon. Essential Aids in English Language Items and Usage. Selangor: Bright Publications Sdn.Bhd., 2005.

MLA (9th ed.) Citation

Leong, Lee Boon. Essential Aids in English Language Items and Usage. Bright Publications Sdn.Bhd., 2005.

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