Gould, W. (2005). Grand master sudoku 2. HarperCollins Publishers.
Chicagoスタイル(17版)引用形式Gould, Wayne. Grand Master Sudoku 2. New York: HarperCollins Publishers, 2005.
MLA(9版)引用形式Gould, Wayne. Grand Master Sudoku 2. HarperCollins Publishers, 2005.
警告: この引用は必ずしも正確ではありません.