Guinness World Records 2013 The Bonus Chapter features all new exclusive pages that you will not find in our annual book. Featuring additional content in the form of photographs and record-breaking facts, The Bonus Chapter also provides a behind-the-scenes look at Guinness World Records. The Bonus Chapter is available exclusively as a richly designed eBook and includes our Top 10 Claimants, a 'Day in the Life of an Adjudicator' as well as a special section on the Olympics and a quiz to test your superlative knowledge. A perfect accompaniment to Guinness World Records 2013, The Bonus Chapter is for all those fans who want to learn even more about the ultimate authority on record-breaking.