* National Geographic: https://www.nationalgeographic.org/encyclopedia/temperate-woodland-and-shrubland-biomes/
* Luonnonsuojelu: https://www.nature.org/en-us/what-we-do/our-priorities/protect-water-and-land/forests-and-grasslands/Temperate-woodland-and-shrubland/
* Encyclopedia Britannica: https://www.britannica.com/place/temperate-woodland-and-shrubland-biomes
* wikipedia: https://en.wikipedia.org/wiki/Temperate_woodland_and_shrubland_biomes