APA (7th ed.) Citation

Zakaria, N. A., Noordin, M. F., & Othman, R. (2011). Knowledge portal. IIUM Press.

Chicago Style (17th ed.) Citation

Zakaria, Noor Azura, Mohamad Fauzan Noordin, and Roslina Othman. Knowledge Portal. IIUM Press, 2011.

MLA (8th ed.) Citation

Zakaria, Noor Azura, et al. Knowledge Portal. IIUM Press, 2011.