Guinness World Records Limited, The Jim Pattison Group, & Glenday, C. E. (2010). Guinness world records 2011: Exploding with thousands of new records. Guinness World Records Limited.
Cita Chicago (17th ed.)Guinness World Records Limited, The Jim Pattison Group, i Craig Editor-In-Chief Glenday. Guinness World Records 2011: Exploding with Thousands of New Records. [London]: Guinness World Records Limited, 2010.
Cita MLA (9th ed.)Guinness World Records Limited, et al. Guinness World Records 2011: Exploding with Thousands of New Records. Guinness World Records Limited, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.