Guinness World Records Limited & Glenday, C. (2016). Guinness world records 2017. Guinness World Records.
Cita Chicago (17th ed.)Guinness World Records Limited i Craig Glenday. Guinness World Records 2017. [London]: Guinness World Records, 2016.
Cita MLA (9th ed.)Guinness World Records Limited i Craig Glenday. Guinness World Records 2017. Guinness World Records, 2016.
Atenció: Aquestes cites poden no estar 100% correctes.