mental_floss Sudoku: It's the Brain Candy You've Been Craving!
Brain GamesĀ® Sudoku (Brain Games (Unnumbered))
Loco Sudoku
The Big Book Of Sudoku (500 Puzzles)
Sudoku 3: 200 Puzzles: Hard to Extreme
Sudoku: Easy to Medium
Sudoku 2: Medium to Hard
The Big Book of Sudoku
The Must Have 2017 Sudoku Puzzle Book: 365 daily sudoku puzzle book for 2017 sudoku. Sudoku puzzles for every day of the year. 365 Sudoku Games - 5 levels of difficulty (easy to hard)
Wordsearch (Ultimate Spiral Puzzles)