APA Citation

Keow, J. H. (2007). Think out of the block with Sudoku. Selangor: KHS Consultancy and Training.

Chicago Style Citation

Keow, Jeff H.S. Think Out of the Block With Sudoku. Selangor: KHS Consultancy and Training, 2007.

MLA Citation

Keow, Jeff H.S. Think Out of the Block With Sudoku. Selangor: KHS Consultancy and Training, 2007.

Warning: These citations may not always be 100% accurate.