APA-čujuhus (7. p.)
Marsh, D. D. Preparing Our Schools for the 21st Century. Association for Supervision and Curriculum Development.
Chicago-čujuhus (17. p.)
Marsh, David D. Preparing Our Schools for the 21st Century. Alexandria, EUA: Association for Supervision and Curriculum Development.
MLA-čujuhus (9. p.)
Marsh, David D. Preparing Our Schools for the 21st Century. Association for Supervision and Curriculum Development.
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