By Duckworth, Katie. León :Everest 2006 . 30 p. , En cub.: Save the Children ;27cm. 8424178513
By Serrano, Lucía . Madrid :Anaya 2021 . [25] p. , 6 a 8 anos ;22cm. 9788469888636
By Duckworth, Katie. León :Everest 2006 . 30 p. , En cub.: Save the Children ;27cm. 8424178505