Gaya APA

kong, B, T, C, P, L, S., Koh, D, C. (). Biology Insight 'O' Level . : Pearson Longman.

Gaya MLA

kong, Beverly, Tay, Consultants:, Prof., Lee, Sing., Koh, Dr., Caroline. "Biology Insight 'O' Level". : Pearson Longman, . Text.