Wiggins, G. P., & McTighe, J. (2011). The understanding by design guide to creating high-quality units. ASCD.
Chicago-viite (17. p.)Wiggins, Grant P., ja Jay McTighe. The Understanding by Design Guide to Creating High-quality Units. Alexandria, Va: ASCD, 2011.
MLA-viite (9. p.)Wiggins, Grant P., ja Jay McTighe. The Understanding by Design Guide to Creating High-quality Units. ASCD, 2011.
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