Naunton J. Jon. (2005). Head for Business. Intermediate Student's Book. New York, Oxford University Press, 2005.
Citace podle Chicago (17th ed.)Naunton J. Jon. Head for Business. Intermediate Student's Book. New York, Oxford University Press, 2005, 2005.
Citace podle MLA (9th ed.)Naunton J. Jon. Head for Business. Intermediate Student's Book. New York, Oxford University Press, 2005, 2005.
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