APA (7th ed.) Citation

Quek, N., & Title. (2021). Pencemaran air. Bright Publications Sdn. Bhd..

Chicago Style (17th ed.) Citation

Quek, Nellie, and Title. Pencemaran Air. Selangor: Bright Publications Sdn. Bhd., 2021.

MLA (9th ed.) Citation

Quek, Nellie, and Title. Pencemaran Air. Bright Publications Sdn. Bhd., 2021.

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