APA
Pierce D., . (2013). Cracking the GRE -2013. New Delhi: Random House.
Chicago
Pierce Doug, . 2013. Cracking the GRE -2013. New Delhi: Random House.
Harvard
Pierce D., . (2013). Cracking the GRE -2013. New Delhi: Random House.
MLA
Pierce Doug, . Cracking the GRE -2013. New Delhi: Random House. 2013.