APA

Powell M., . (2004). In Company. Upper intermediate. Oxford: Macmillan.

Chicago

Powell M, . 2004. In Company. Upper intermediate. Oxford: Macmillan.

Harvard

Powell M., . (2004). In Company. Upper intermediate. Oxford: Macmillan.

MLA

Powell M, . In Company. Upper intermediate. Oxford: Macmillan. 2004.