Association for Supervision and Curriculum Development & Marsh, D. D. (1999). Preparing our schools for the 21st century. Association for Supervision and Curriculum Development.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Association for Supervision and Curriculum Development ба David D. Marsh. Preparing Our Schools for the 21st Century. Alexandria, Va.: Association for Supervision and Curriculum Development, 1999.
MLA -ийн эшлэл (9 дэх хэвлэлт)Association for Supervision and Curriculum Development ба David D. Marsh. Preparing Our Schools for the 21st Century. Association for Supervision and Curriculum Development, 1999.
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