APA (7th ed.) Citation

Hakro, D. N., Bhatti, Z., & Shah, A. (2011). User defined methods. IIUM Press.

Chicago Style (17th ed.) Citation

Hakro, Dil Nawaz, Zeeshan Bhatti, and Asadullah Shah. User Defined Methods. IIUM Press, 2011.

MLA (9th ed.) Citation

Hakro, Dil Nawaz, et al. User Defined Methods. IIUM Press, 2011.