Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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