STEINBERG, R. (1986). Prentice-hall's practice tests for the TOEFL. Prentice-Hall.
Chicago-čujuhus (17. p.)STEINBERG, Roberta. Prentice-hall's Practice Tests for the TOEFL. Englewood Cliffs: Prentice-Hall, 1986.
MLA-čujuhus (9. p.)STEINBERG, Roberta. Prentice-hall's Practice Tests for the TOEFL. Prentice-Hall, 1986.
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