Gaya APA

Yong, L, W., Wai, L, K. (2009). SCIENCE IN FOCUS PHYSICS : 'O' LEVEL 2 EDITION . : Pearson Longman.

Gaya MLA

Yong, Loo, Wan., Wai, Loo, Kwok. "SCIENCE IN FOCUS PHYSICS : 'O' LEVEL 2 EDITION". : Pearson Longman, 2009. Text.