APA Citation

Choo Yan Tong. (2006). Focus Excel Biology Form 4. Selangor: Penerbitan Pelangi Sdn.Bhd.

Chicago Style Citation

Choo Yan Tong. Focus Excel Biology Form 4. Selangor: Penerbitan Pelangi Sdn.Bhd, 2006.

MLA Citation

Choo Yan Tong. Focus Excel Biology Form 4. Selangor: Penerbitan Pelangi Sdn.Bhd, 2006.

Warning: These citations may not always be 100% accurate.