APA

Powell M., . (2007). In Company. Upper intermediate. Oxford: Macmillan.

Chicago

Powell M, . 2007. In Company. Upper intermediate. Oxford: Macmillan.

Harvard

Powell M., . (2007). In Company. Upper intermediate. Oxford: Macmillan.

MLA

Powell M, . In Company. Upper intermediate. Oxford: Macmillan. 2007.