Cita APA

Guinness World Records Limited. (2015). Guinness world records 2015. Guinness World Records Limited.

Chicago Edition Citation

Guinness World Records Limited. Guinness World Records 2015. United Kingdom: Guinness World Records Limited, 2015.

Cita MLA

Guinness World Records Limited. Guinness World Records 2015. Guinness World Records Limited, 2015.

Atenció: Aquestes cites poden no estar 100% correctes.