"Wettergrens barnbokollon". Svenska barnboksinstitutet (The Swedish Institute for Children's Books). Archived from the original on 5 September 2011. Retrieved 8 October 2021.
"Wettergrens barnbokollon". Svenska barnboksinstitutet (The Swedish Institute for Children's Books). Archived from the original on 5 September 2011. Retrieved 8 October 2021.