APA (7th ed.) Citation

(2003). GUINNESS world records 2003. Guinness World Records.

Chicago Style (17th ed.) Citation

GUINNESS World Records 2003. London: Guinness World Records, 2003.

MLA (9th ed.) Citation

GUINNESS World Records 2003. Guinness World Records, 2003.

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