Association for Supervision and Curriculum Development, ebrary, Inc, & Jacobs, H. H. (2010). Curriculum 21: Essential education for a changing world. Association for Supervision and Curriculum Development.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Association for Supervision and Curriculum Development, Inc ebrary, ба Heidi Hayes Jacobs. Curriculum 21: Essential Education for a Changing World. Alexandria, Va.: Association for Supervision and Curriculum Development, 2010.
MLA -ийн эшлэл (9 дэх хэвлэлт)Association for Supervision and Curriculum Development, et al. Curriculum 21: Essential Education for a Changing World. Association for Supervision and Curriculum Development, 2010.
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