APA (7th ed.) Citation

UNESCO. (1973). New Unesco source book for science teaching. The Unesco Press.

Chicago Style (17th ed.) Citation

UNESCO. New Unesco Source Book for Science Teaching. The Unesco Press, 1973.

MLA (9th ed.) Citation

UNESCO. New Unesco Source Book for Science Teaching. The Unesco Press, 1973.

Warning: These citations may not always be 100% accurate.