Hoogesteger, T., Rahkonen, J., & Karhilahti, A. (2013). Pool frog (Pelophylax lessonae) Camerano 1882 (Anura, Ranidae), an addition to the Finnish amphibian fauna. Memoranda Societatis Pro Fauna Et Flora Fennica, 890. Noudettu osoitteesta https://journal.fi/msff/article/view/40883