Harris, M., Mower, D., & Sikorzynska, A. (2006). New Opportunities, Education for life: Pre-intermediate. Students' Book (2a. ed.). Pearson Education Limited.
Citace podle Chicago (17th ed.)Harris, Michael, David Mower, a Anna Sikorzynska. New Opportunities, Education for Life: Pre-intermediate. Students' Book. 2a. ed. Essex: Pearson Education Limited, 2006.
Citace podle MLA (9th ed.)Harris, Michael, et al. New Opportunities, Education for Life: Pre-intermediate. Students' Book. 2a. ed. Pearson Education Limited, 2006.
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