Não informado. (1971). Journal of the College Science Teaching. National Science Teachers Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the College Science Teaching. Washington: National Science Teachers Association, 1971.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the College Science Teaching. National Science Teachers Association, 1971.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.