Cita APA (7a ed.)

Duckworth, M. (2000). Quick work workbook: Pre-intermediate. Oxford University.

Cita Chicago Style (17a ed.)

Duckworth, Michael. Quick Work Workbook: Pre-intermediate. Victoria: Oxford University, 2000.

Cita MLA (8a ed.)

Duckworth, Michael. Quick Work Workbook: Pre-intermediate. Oxford University, 2000.