APA (7th ed.) Citation

Lena Abdullah & Lai, M. (2006). Light; sound; forces and simple machines. Jade Green Publications.

Chicago Style (17th ed.) Citation

Lena Abdullah and Magdalene Lai. Light; Sound; Forces and Simple Machines. Kuala Lumpur: Jade Green Publications, 2006.

MLA (9th ed.) Citation

Lena Abdullah and Magdalene Lai. Light; Sound; Forces and Simple Machines. Jade Green Publications, 2006.