Yeap Tok Kheng. (2009). Longman Essenteal Chemistry Spm. Selangor.
Chicago Style CitationYeap Tok Kheng. Longman Essenteal Chemistry Spm. Selangor, 2009.
MLA CitationYeap Tok Kheng. Longman Essenteal Chemistry Spm. Selangor, 2009.
Warning: These citations may not always be 100% accurate.