Watkins, J. J. (2004). Across the board: The mathematics of chessboard problems. Princeton University Press.
Dyfyniad Arddull ChicagoWatkins, John J. Across the Board: The Mathematics of Chessboard Problems. Princeton: Princeton University Press, 2004.
Dyfyniad MLAWatkins, John J. Across the Board: The Mathematics of Chessboard Problems. Princeton University Press, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.