Crowther, I. (2007). Creating effective learning environments (Second edition.). Thomson Nelson.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCrowther, Ingrid. Creating Effective Learning Environments. Second edition. Toronto, ON: Thomson Nelson, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCrowther, Ingrid. Creating Effective Learning Environments. Second edition. Thomson Nelson, 2007.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.