APA Style

Kwan, L, P., Lam, E, Y, K. (2011). GCE 'O' Level Biology Matters . Singapore: Marshall Cavendish Education.

MLA Style

Kwan, Lam, Peng., Lam, Eric, Y, K. "GCE 'O' Level Biology Matters". Singapore: Marshall Cavendish Education, 2011. Text.