APA (7th ed.) Citation

United Nations Educational, Scientific and Cultural Organization. (1973). New Unesco source book for science teaching ([New rev. ed.].). Unesco.

Chicago Style (17th ed.) Citation

United Nations Educational, Scientific and Cultural Organization. New Unesco Source Book for Science Teaching. [New rev. ed.]. Paris: Unesco, 1973.

MLA (9th ed.) Citation

United Nations Educational, Scientific and Cultural Organization. New Unesco Source Book for Science Teaching. [New rev. ed.]. Unesco, 1973.