Soars J. John & Soars L. Liz. (2002). New Headway English Course; Pre-Intermediate; Student's Book (8-th ed.). New York, Oxford University Press, 2002.
Cita Chicago (17th ed.)Soars J. John i Soars L. Liz. New Headway English Course; Pre-Intermediate; Student's Book. 8-th ed. New York, Oxford University Press, 2002, 2002.
Cita MLA (9th ed.)Soars J. John i Soars L. Liz. New Headway English Course; Pre-Intermediate; Student's Book. 8-th ed. New York, Oxford University Press, 2002, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.