王敬华 & 荷兰王牌特色机构. (2010). 双胞数独: Sudoku twins. 广西人民出版社.
Chicago Style (17th ed.) Citation王敬华 and 荷兰王牌特色机构. 双胞数独: Sudoku Twins. 广西人民出版社, 2010.
MLA (8th ed.) Citation王敬华 and 荷兰王牌特色机构. 双胞数独: Sudoku Twins. 广西人民出版社, 2010.
Warning: These citations may not always be 100% accurate.