Erwin, J. C. (2004). The classroom of choice: Giving students what they need and getting what you want. Association for Supervision and Curriculum Development.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিErwin, Jonathan C. The Classroom of Choice: Giving Students What They Need and Getting What You Want. Alexandria, VA: Association for Supervision and Curriculum Development, 2004.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিErwin, Jonathan C. The Classroom of Choice: Giving Students What They Need and Getting What You Want. Association for Supervision and Curriculum Development, 2004.
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