Soars, J., & Soars, L. (2004). New headway English course: Elementary Student's book. Oxford University Press.
Cita Chicago (17th ed.)Soars, John, i Liz Soars. New Headway English Course: Elementary Student's Book. New York: Oxford University Press, 2004.
Cita MLA (8th ed.)Soars, John, i Liz Soars. New Headway English Course: Elementary Student's Book. Oxford University Press, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.