APA (7th ed.) Citation

Shortz, W. (2017). Will Shortz presents sudoku and chill 200 easy to hard puzzles. St. Martin's Griffin.

Chicago Style (17th ed.) Citation

Shortz, Will. Will Shortz Presents Sudoku and Chill 200 Easy to Hard Puzzles. New York: St. Martin's Griffin, 2017.

MLA (9th ed.) Citation

Shortz, Will. Will Shortz Presents Sudoku and Chill 200 Easy to Hard Puzzles. St. Martin's Griffin, 2017.