APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

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