Eng Nguan Hong. (2017). Focus spm form 4 . 5: Chemistry. Penerbitan Pelangi Sdn Bhd.
Chicago Style (17th ed.) CitationEng Nguan Hong. Focus Spm Form 4 . 5: Chemistry. Selangor: Penerbitan Pelangi Sdn Bhd, 2017.
MLA (9th ed.) CitationEng Nguan Hong. Focus Spm Form 4 . 5: Chemistry. Penerbitan Pelangi Sdn Bhd, 2017.
Warning: These citations may not always be 100% accurate.