Gould, W. (2005). Grand master sudoku 2. HarperCollins Publishers.
Chicago-čujuhus (17. p.)Gould, Wayne. Grand Master Sudoku 2. New York: HarperCollins Publishers, 2005.
MLA-čujuhus (9. p.)Gould, Wayne. Grand Master Sudoku 2. HarperCollins Publishers, 2005.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.