Gourville, H. d. The Modern handbook of English (6th.ed.). E.Crespillo.
Chicago-čujuhus (17. p.)Gourville, H.D. de. The Modern Handbook of English. 6th.ed. Buenos Aires: E.Crespillo.
MLA-čujuhus (9. p.)Gourville, H.D. de. The Modern Handbook of English. 6th.ed. E.Crespillo.
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