Gaya APA

Teo, G, W, L., Luan, H, S. (2004). Science 4A: Textbook (4A SD). Singapore: Federal Publication.

Gaya MLA

Teo, Gwan, Wai, Lan,., Luan, Hwa, Siew. "Science 4A: Textbook". 4A SD Singapore: Federal Publication, 2004. .