Tilbury, A., Clementson, T., Hendra, L. A., & Rea, D. (2010). English unlimited: Pre-intermediate. Coursebook with e-Portfolio. B1. Cambridge University Press.
Citace podle Chicago (17th ed.)Tilbury, Alex, Theresa Clementson, Leslie Anne Hendra, a David Rea. English Unlimited: Pre-intermediate. Coursebook with E-Portfolio. B1. Cambridge, United Kingdom: Cambridge University Press, 2010.
Citace podle MLA (9th ed.)Tilbury, Alex, et al. English Unlimited: Pre-intermediate. Coursebook with E-Portfolio. B1. Cambridge University Press, 2010.
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