Loftie's Historic London (review). The Saturday Review of Politics, Literature, Science and Art. February 19, 1887, s. 271. Dostupné online [cit. October 2015].Je zde použita šablona {{Cite journal}} označená jako k „pouze dočasnému použití“.
web.archive.org
illustrations 1, 4 of the webpage of the Walbrook River page - a synopsis which cites the following books: Nicholas Barton, The Lost Rivers of London (1962) Anthony Clayton, Subterranean City (2000) Michael Harrison, London Beneath the Pavement (1961) Alfred Stanley Foord, Springs, Streams, and Spas of London. (1910) J. G. White, History of The Ward of Walbrook. (1904) Andrew Duncan, Secret London. (6th Edition, 2009). walbrookriver.org [online]. [cit. 2018-12-19]. Dostupné v archivu pořízeném dne 2011-07-28.
