Aagaard, J. Excelling at chess, Everyman, 2004, 192 p en Excelling at combinational play
Aagaard, J. Excelling at chess, Everyman, 2004, 192 p en Excelling at combinational play, Everyman, 2004, 239 p Met handtekening Seirawan
Aagaard, J. Excelling at chess, Everyman, 2004, 192 p en Excelling at combinational play, Everyman, 2004, 239 p Met handtekening Seirawan