Watkins, J. (2004). Across the Board: The Mathematics of Chessboard Problems. UP.
Chicago-stil citatWatkins, John. Across the Board: The Mathematics of Chessboard Problems. UP, 2004.
MLA-referensWatkins, John. Across the Board: The Mathematics of Chessboard Problems. UP, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.