المؤلفون: Bernd Schmidt, https://www.wir-waren-so-frei.de/index.php/Browse/modifyCriteria/facet/creator_facet/mod_id/0/id/105, Europeana
URL الوصول: http://europeana.eu/portal/record/2025901/https___www_wir_waren_so_frei_de_index_php_Detail_Object_Show_object_id_2524.html
المؤلفون: Sigrid Marotz, https://www.wir-waren-so-frei.de/index.php/Browse/modifyCriteria/facet/creator_facet/mod_id/0/id/551, Europeana
URL الوصول: http://europeana.eu/portal/record/2025901/https___www_wir_waren_so_frei_de_index_php_Detail_Object_Show_object_id_6424.html
المؤلفون: Sigrid Marotz
الإتاحة: https://www.wir-waren-so-frei.de/index.php/Detail/Object/Show/object_id/6424
المؤلفون: Bernd Schmidt
الإتاحة: https://www.wir-waren-so-frei.de/index.php/Detail/Object/Show/object_id/2524