APA-viite (7. p.)
Snow, D., & Barley, Z. A. (2005). Classroom strategies for helping at-risk students. Association for Supervision and Curriculum Development.
Chicago-viite (17. p.)
Snow, David, ja Zoe A. Barley. Classroom Strategies for Helping At-risk Students. Alexandria, VA: Association for Supervision and Curriculum Development, 2005.
MLA-viite (9. p.)
Snow, David, ja Zoe A. Barley. Classroom Strategies for Helping At-risk Students. Association for Supervision and Curriculum Development, 2005.
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