Cita APA (7a ed.)

Pile, L. (2006). Intelligent business: Workbook : upper Intermediate business english. Longman.

Cita Chicago Style (17a ed.)

Pile, Louise. Intelligent Business: Workbook : Upper Intermediate Business English. London: Longman, 2006.

Cita MLA (9a ed.)

Pile, Louise. Intelligent Business: Workbook : Upper Intermediate Business English. Longman, 2006.