Gaya APA

Loh, H. (2014). All About Additional Mathematics : Study Smart - Geometry & Trigonometry For 'O' Level . Singapore :: Pearson Education South Asia Pte Ltd.

Gaya MLA

Loh, Henry. "All About Additional Mathematics : Study Smart - Geometry & Trigonometry For 'O' Level". Singapore :: Pearson Education South Asia Pte Ltd, 2014. Text.