Gould, W. (2005). Grand master sudoku 2. HarperCollins Publishers.
芝加哥风格引文Gould, Wayne. Grand Master Sudoku 2. New York: HarperCollins Publishers, 2005.
MLA引文Gould, Wayne. Grand Master Sudoku 2. HarperCollins Publishers, 2005.
警告:这些引文格式不一定是100%准确.
Gould, W. (2005). Grand master sudoku 2. HarperCollins Publishers.
芝加哥风格引文Gould, Wayne. Grand Master Sudoku 2. New York: HarperCollins Publishers, 2005.
MLA引文Gould, Wayne. Grand Master Sudoku 2. HarperCollins Publishers, 2005.