O'Neill, R. (1970). English in situations (1a. ed.). Oxford University.
Chicago-čujuhus (17. p.)O'Neill, Robert. English in Situations. 1a. ed. Londres: Oxford University, 1970.
MLA-čujuhus (9. p.)O'Neill, Robert. English in Situations. 1a. ed. Oxford University, 1970.
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