APA
Gould W., . (2008). Sudoku Platinum. London: Harpercollins.
Chicago
Gould Wayne, . 2008. Sudoku Platinum. London: Harpercollins.
Harvard
Gould W., . (2008). Sudoku Platinum. London: Harpercollins.
MLA
Gould Wayne, . Sudoku Platinum. London: Harpercollins. 2008.