APA (7th ed.) Citation

Youth, W. F. o. D. Give Peace a Chance. Portugal. Youth Peace Festival.

Chicago Style (17th ed.) Citation

Youth, World Federation of Democratic. Give Peace a Chance. Portugal. Youth Peace Festival.

MLA (8th ed.) Citation

Youth, World Federation of Democratic. Give Peace a Chance. Portugal. Youth Peace Festival.

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