APA (7th ed.) Citation

Kim, Y. S., Hassan Basri Sedek, Nor Azura A'ripin, & Kim, H. S. (2017). Why? MATEMATIK. Orbit Buku Sdn. Bhd.

Chicago Style (17th ed.) Citation

Kim, Yoo Soo, Hassan Basri Sedek, Nor Azura A'ripin, and Hong Sung Kim. Why? MATEMATIK. Petaling Jaya, Selangor: Orbit Buku Sdn. Bhd, 2017.

MLA (9th ed.) Citation

Kim, Yoo Soo, et al. Why? MATEMATIK. Orbit Buku Sdn. Bhd, 2017.