Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://enacademic.com/dic.nsf/enwiki/6593676
https://hiveminer.com/Tags/tietz
https://hiveminer.com/Tags/tietz/Timeline
https://www.agefotostock.com/age/es/Stock-Images/Rights-Managed/MOH-22872
https://www.urbipedia.org/hoja/Joseph_Maria_Olbrich#/media/File:Olbrich.GrandesAlmacenesTietz.jpg
https://www.agefotostock.com/age/es/Stock-Images/Rights-Managed/MOH-79744
https://www.alamy.es/imagenes/tietz.html
https://www.arquitecturayempresa.es/noticia/edificios-comerciales-el-nacimiento-de-los-centros-comerciales
https://www.europeana.eu/portal/es/record/2026116/Partage_Plus_ProvidedCHO_Bildarchiv_Foto_Marburg_obj_20176434_1_064_958.html
https://www.europeana.eu/portal/es/record/2026116/Partage_Plus_ProvidedCHO_Bildarchiv_Foto_Marburg_obj_20176434_408_084.html
https://www.europeana.eu/portal/es/record/2026116/Partage_Plus_ProvidedCHO_Bildarchiv_Foto_Marburg_obj_20176434_926_048.html
https://www.europeana.eu/portal/es/record/2026116/Partage_Plus_ProvidedCHO_Bildarchiv_Foto_Marburg_obj_20176434_1_064_976.html
https://www.pinterest.es/pin/426927239647870540/?lp=true
https://www.europeana.eu/portal/es/record/2026116/Partage_Plus_ProvidedCHO_Bildarchiv_Foto_Marburg_obj_20176434_1_049_393.html
https://www.europeana.eu/portal/es/record/2026116/Partage_Plus_ProvidedCHO_Bildarchiv_Foto_Marburg_obj_20176434_1_049_395.html