APA

Harrison M., Kerr R., . (2002). BEC. Higher Practice Tests. New York: Oxford University Press.

Chicago

Harrison M, Kerr R, . 2002. BEC. Higher Practice Tests. New York: Oxford University Press.

Harvard

Harrison M., Kerr R., . (2002). BEC. Higher Practice Tests. New York: Oxford University Press.

MLA

Harrison M, Kerr R, . BEC. Higher Practice Tests. New York: Oxford University Press. 2002.