Cita APA

Falla, T., Soars, J., & Soars, L. (2002). American headway starter: Workbook. Oxford: Oxford Univ. Press.

Chicago Style Citation

Falla, Tim, John Soars, i Liz Soars. American Headway Starter: Workbook. Oxford: Oxford Univ. Press, 2002.

Cita MLA

Falla, Tim, John Soars, i Liz Soars. American Headway Starter: Workbook. Oxford: Oxford Univ. Press, 2002.