APA (7th ed.) Citation

Block, S. S., & Tavares, S. A. (2009). Before Sudoku: The world of magic squares. Oxford University Press.

Chicago Style (17th ed.) Citation

Block, Seymour S., and Santiago Alves Tavares. Before Sudoku: The World of Magic Squares. Oxford ; New York: Oxford University Press, 2009.

MLA (9th ed.) Citation

Block, Seymour S., and Santiago Alves Tavares. Before Sudoku: The World of Magic Squares. Oxford University Press, 2009.