APA (7th ed.) Citation

LAI, CHOK, & K. Shanmugam. (1994). Impresif SPM sains. Delta.

Chicago Style (17th ed.) Citation

LAI, CHOK, and K. Shanmugam. Impresif SPM Sains. Petaling Jaya: Delta, 1994.

MLA (8th ed.) Citation

LAI, et al. Impresif SPM Sains. Delta, 1994.