1.
Wilbrand S. Ostergren, Robert C. i Le Bossé, Mathias (2011): The Europeans: A Geography of People, Culture and Environment. Second Edition. dag [Internet]. 2012 May 17 [cited 2025 Oct. 18];58(2):341-3. Available from: https://ada-dag2.precarietat.net/article/view/v58-n2-wilbrand