(2000). Trends in the Reading Performance of 9-, 13-, & 17-year-olds. U.S. Department of Education.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Trends in the Reading Performance of 9-, 13-, & 17-year-olds. U.S. Department of Education, 2000.
MLA -ийн эшлэл (9 дэх хэвлэлт)Trends in the Reading Performance of 9-, 13-, & 17-year-olds. U.S. Department of Education, 2000.
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