APA (7th ed.) Citation

Watkins, J. J. (2004). Across the board: The mathematics of chessboard problems. Princeton University Press.

Chicago Style (17th ed.) Citation

Watkins, John J. Across the Board: The Mathematics of Chessboard Problems. Princeton: Princeton University Press, 2004.

MLA (9th ed.) Citation

Watkins, John J. Across the Board: The Mathematics of Chessboard Problems. Princeton University Press, 2004.