Harris, M. (2006). New Oportunities education for life: Elementary students' book. Longman.
Chicago-čujuhus (17. p.)Harris, Michael. New Oportunities Education for Life: Elementary Students' Book. England: Longman, 2006.
MLA-čujuhus (9. p.)Harris, Michael. New Oportunities Education for Life: Elementary Students' Book. Longman, 2006.
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