Education, U. I. B. o. Educational documentation and information: Bulletin of the IBE. Vol.51 No. 205 4th quarter 1977. Unesco. IBE.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEducation, Unesco. Intern Bureau of. Educational Documentation and Information: Bulletin of the IBE. Vol.51 No. 205 4th Quarter 1977. Unesco. IBE.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEducation, Unesco. Intern Bureau of. Educational Documentation and Information: Bulletin of the IBE. Vol.51 No. 205 4th Quarter 1977. Unesco. IBE.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.