National Geographic Kids Quiz Whiz: 1,000 Super Fun, Mind-bending, Totally Awesome Trivia Questions (National Geographic Kids) - National Geographic Kids (Paperback) 19-09-2012
National Geographic Kids Why? Over 1,111 Answers to Everything: Over 1,111 Answers to Everything (National Geographic Kids) - Crispin Boyer; National Geographic Kids (Hardback) 05-11-2015
Quiz Whiz Quiz Whiz 2: 1,000 Super Fun Mind-bending Totally Awesome Trivia Questions (Quiz Whiz ) - National Geographic Kids (Paperback) 05-09-2013
