APA (7th ed.) Citation

Timmerman, C. (2006). The everything 15-minute sudoku book: Over 200 puzzles with instructions for solving. Adams Media.

Chicago Style (17th ed.) Citation

Timmerman, Charles. The Everything 15-minute Sudoku Book: Over 200 Puzzles with Instructions for Solving. Avon, Mass: Adams Media, 2006.

MLA (8th ed.) Citation

Timmerman, Charles. The Everything 15-minute Sudoku Book: Over 200 Puzzles with Instructions for Solving. Adams Media, 2006.