Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
https://www.networkrail.co.uk/virtualarchive/liverpool-street/
http://www.architectsjournal.co.uk/news/daily-news/glenn-howells-completes-liverpool-lime-street-overhaul/8606759.article
http://www.ebay.co.uk/itm/Bishopsgate-Railway-Station-Photo-Great-Eastern-Railway-Liverpool-Street-Area-/251401307139
https://www.wikipedia.com
http://www.archimpactproducts.com/liver.html