Cita APA (7a ed.)

Johnson, C. (2006). Intelligent Business Pre-Intermediate Workbook and CD pack. Longman.

Cita Chicago Style (17a ed.)

Johnson, Christine. Intelligent Business Pre-Intermediate Workbook and CD Pack. London: Longman, 2006.

Cita MLA (9a ed.)

Johnson, Christine. Intelligent Business Pre-Intermediate Workbook and CD Pack. Longman, 2006.