Cita APA (7th ed.)

Soars J. John & Soars L. Liz. (1996). Headway. Intermediate: Student's Book. Oxford, Oxford University Press, 1996.

Cita Chicago (17th ed.)

Soars J. John i Soars L. Liz. Headway. Intermediate: Student's Book. Oxford, Oxford University Press, 1996, 1996.

Cita MLA (9th ed.)

Soars J. John i Soars L. Liz. Headway. Intermediate: Student's Book. Oxford, Oxford University Press, 1996, 1996.