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Swango, C. J., & Steward, S. B. (2002). Help! I'm teaching middle school science. NSTApress.
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Dyfyniad Arddull Chicago
Swango, C. Jill, and Sally Boles Steward. Help! I'm Teaching Middle School Science. Arlington, Va.: NSTApress, 2002.
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Dyfyniad MLA
Swango, C. Jill, and Sally Boles Steward. Help! I'm Teaching Middle School Science. NSTApress, 2002.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.