APA (7th ed.) Citation

Karen Khong. Mastering your english: Back to basic. Cooray's House Of Publications Sdn Bhd.

Chicago Style (17th ed.) Citation

Karen Khong. Mastering Your English: Back to Basic. Selangor: Cooray's House Of Publications Sdn Bhd.

MLA (9th ed.) Citation

Karen Khong. Mastering Your English: Back to Basic. Cooray's House Of Publications Sdn Bhd.

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