Cita APA (7a ed.)
Soars, J. a. L. (1991). Headway. Upper-Intermediate: Student's Book + 2 zvukové kazety (12.impression.). Oxford University Press.
Cita Chicago Style (17a ed.)
Soars, John and Liz. Headway. Upper-Intermediate: Student's Book + 2 Zvukové Kazety. 12.impression. Oxford: Oxford University Press, 1991.
Cita MLA (9a ed.)
Soars, John and Liz. Headway. Upper-Intermediate: Student's Book + 2 Zvukové Kazety. 12.impression. Oxford University Press, 1991.
Precaución: Estas citas no son 100% exactas.