EASTON, L. B., KLEIN, M., & ALLEN, H. B. (1981). Expresswaya: A basal language program level 5. The Economy Co.
Chicago-čujuhus (17. p.)EASTON, Lois Brown, Marvin KLEIN, juo Harold B. ALLEN. Expresswaya: A Basal Language Program Level 5. Oklahoma City: The Economy Co, 1981.
MLA-čujuhus (9. p.)EASTON, Lois Brown, et al. Expresswaya: A Basal Language Program Level 5. The Economy Co, 1981.
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