APA

Hughes B. B., Dickson J. R. & Irfan M. T. (2009). Patterns of potential human progress. New Delhi: Oxford University Press.

Chicago

Hughes Barry B, Dickson Janet R and Irfan Mohammad T. 2009. Patterns of potential human progress. New Delhi: Oxford University Press.

Harvard

Hughes B. B., Dickson J. R. and Irfan M. T. (2009). Patterns of potential human progress. New Delhi: Oxford University Press.

MLA

Hughes Barry B, Dickson Janet R and Irfan Mohammad T. Patterns of potential human progress. New Delhi: Oxford University Press. 2009.