VONDERACH, Gerd. Herbert Kötter – an outstanding German rural and agricultural sociologist. Eastern European Countryside, [S. l.], v. 16, p. 231–238, 2010. DOI: 10.2478/4007. Disponível em: https://apcz.umk.pl/EEC/article/view/4007. Acesso em: 5 feb. 2025.