Cita APA (7a ed.)
Soars, J., & Soars, L. (1987). Headway. Upper-Intermediate. Class Cassette 2. Oxford University Press.
Cita Chicago Style (17a ed.)
Soars, John, y Liz Soars. Headway. Upper-Intermediate. Class Cassette 2. Oxford: Oxford University Press, 1987.
Cita MLA (9a ed.)
Soars, John, y Liz Soars. Headway. Upper-Intermediate. Class Cassette 2. Oxford University Press, 1987.
Precaución: Estas citas no son 100% exactas.