National Science Teachers Association & Gabel, D. (1994). Handbook of research on science teaching and learning. Macmillan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Science Teachers Association और Dorothy Gabel. Handbook of Research on Science Teaching and Learning. New York: Macmillan, 1994.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNational Science Teachers Association और Dorothy Gabel. Handbook of Research on Science Teaching and Learning. Macmillan, 1994.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.