APA (7th ed.) Citation

(2017). Guinness world records 2018. Guinness world.

Chicago Style (17th ed.) Citation

Guinness World Records 2018. UK: Guinness world, 2017.

MLA (9th ed.) Citation

Guinness World Records 2018. Guinness world, 2017.

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