Algebra & trigonometry - Robert Blitzer; Goh Wei Wei; Heng Chai Yen; Mohd Daud Hassan; Ng Lik Neo; Tan Lai Poh; Tay Cheng Lan; Wan Hafiza Wan Hassan; Yasothei Suppiah (Petaling Jaya: Pearson Malaysia Sdn. Bhd., 2007)