Cita APA (7th ed.)

Nixon R. Rosematy, Gude K. Kathy, & Duckworth M. Michael. (2007). Matrix. Pre-Intermediate Workbook. New York, Oxford University Press, 2007.

Cita Chicago (17th ed.)

Nixon R. Rosematy, Gude K. Kathy, i Duckworth M. Michael. Matrix. Pre-Intermediate Workbook. New York, Oxford University Press, 2007, 2007.

Cita MLA (9th ed.)

Nixon R. Rosematy, et al. Matrix. Pre-Intermediate Workbook. New York, Oxford University Press, 2007, 2007.