APA (7th ed.) Citation

(2009). Guinness world records 2009. Guinness World Records Ltd.

Chicago Style (17th ed.) Citation

Guinness World Records 2009. [S.l]: Guinness World Records Ltd, 2009.

MLA (8th ed.) Citation

Guinness World Records 2009. Guinness World Records Ltd, 2009.

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