APA

Thompson، Lesley, Bowler، Bill, . (2011). Deep Trouble. London: Oxford University Press.

Chicago

Thompson، Lesley, Bowler، Bill, . 2011. Deep Trouble. London: Oxford University Press.

Harvard

Thompson، Lesley, Bowler، Bill, . (2011). Deep Trouble. London: Oxford University Press.

MLA

Thompson، Lesley, Bowler، Bill, . Deep Trouble. London: Oxford University Press. 2011.