Cita APA (7a ed.)
Soars, J., & Soars, L. (1996). Headway. Pre-Intermediate. Workbook. Without Key (15.impression.). Oxford University Press.
Cita Chicago Style (17a ed.)
Soars, John, y Liz Soars. Headway. Pre-Intermediate. Workbook. Without Key. 15.impression. Oxford: Oxford University Press, 1996.
Cita MLA (9a ed.)
Soars, John, y Liz Soars. Headway. Pre-Intermediate. Workbook. Without Key. 15.impression. Oxford University Press, 1996.
Precaución: Estas citas no son 100% exactas.