Kriss Kross Puzzle Book For Adults 400 Puzzles with Full Solutions: Kriss Kross (Criss Cross) Crossword Activity Book with 12.000 words on completely different topics: Uchqun, Dreambrain: 9798843930059: Amazon.com: Books
Workbook on Chatter by Ethan Kross (Orialet): The Voice in Our Head, Why It Matters, and How to Harness It: Orialet: 9798835768929: Amazon.com: Books