APA
O'Brien D., . (2005). Penguin India Reference Yearbook 2006. : .
Chicago
O'Brien Derek, . 2005. Penguin India Reference Yearbook 2006. : .
Harvard
O'Brien D., . (2005). Penguin India Reference Yearbook 2006. : .
MLA
O'Brien Derek, . Penguin India Reference Yearbook 2006. : . 2005.