Soars J. John & Soars L. Liz. (2001). New Headway English Course. Pre-Intermediate: Student's Book (7-th ed.). New York, Oxford University Press, 2001.
Citazione stile Chigago Style (17a edizione)Soars J. John e Soars L. Liz. New Headway English Course. Pre-Intermediate: Student's Book. 7-th ed. New York, Oxford University Press, 2001, 2001.
Citatione MLA (9a ed.)Soars J. John e Soars L. Liz. New Headway English Course. Pre-Intermediate: Student's Book. 7-th ed. New York, Oxford University Press, 2001, 2001.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.