Rupinder Aul. (2019). A Mind Game For All - MEDIUM Sudoku Puzzles - 4 (2019.). Manoj Publications.
Chicagoスタイル(17版)引用形式Rupinder Aul. A Mind Game For All - MEDIUM Sudoku Puzzles - 4. 2019. Manoj Publications, 2019.
MLA(9版)引用形式Rupinder Aul. A Mind Game For All - MEDIUM Sudoku Puzzles - 4. 2019. Manoj Publications, 2019.
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