APA (7 वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, & Levin, B. B. (2001). Energizing teacher education and professional development with problem-based learning. Association for Supervision and Curriculum Development.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, और Barbara B. Levin. Energizing Teacher Education and Professional Development with Problem-based Learning. Alexandria, Va.: Association for Supervision and Curriculum Development, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, और Barbara B. Levin. Energizing Teacher Education and Professional Development with Problem-based Learning. Association for Supervision and Curriculum Development, 2001.
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