APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Unesco. New Unesco Source Book for Science Teaching. Paris: UNESCO, 1973.

MLA (9th ed.) Citation

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

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