APA-ийн эшлэл(7 дахь хэвлэлт)
Checkley, K. (2006). The essentials of mathematics K-6: Effective curriculum, instruction, and assessment. Association for Supervision and Curriculum Development.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Checkley, Kathy. The Essentials of Mathematics K-6: Effective Curriculum, Instruction, and Assessment. Alexandria, Va.: Association for Supervision and Curriculum Development, 2006.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Checkley, Kathy. The Essentials of Mathematics K-6: Effective Curriculum, Instruction, and Assessment. Association for Supervision and Curriculum Development, 2006.
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