^"Mad. Sq. History: Madison Square Garden". Madison Square Park. Madison Square Park Conservancy. Retrieved 31 October 2018.
^"John Gibson". www.scottisharchitects.org.uk. Retrieved 8 August 2018.
^Cassanelli, Roberto (2002). Ruins of Ancient Rome: The Drawings of French Architects who Won the Prix de Rome, 1786-1924. Getty Publications. p. 19. ISBN 9780892366804.
^"Jacobus Johannes Pieter Oud (1890-1963)". data.bnf.fr. Retrieved 8 August 2018.
^Warnat, Grit. "Der Baukünstler von Magdeburg". m.volksstimme.de (in German). Retrieved 8 August 2018.
^"Williams, Sir (Evan) Owen (1890–1969), civil engineer and architect". Oxford Dictionary of National Biography (online ed.). Oxford University Press. 2004. doi:10.1093/ref:odnb/51931. Retrieved 8 August 2018. (Subscription or UK public library membership required.)
^Brügge, Anne (2018-03-08). "Ingrid Wallberg". Svenskt kvinnobiografiskt lexikon (in Swedish). Archived from the original on 2019-07-31. Retrieved 2021-06-03.
^"Louis de Soissons". www.royalacademy.org.uk. Retrieved 8 August 2018.
^"Else Lissitzky". www.guggenheim.org. Retrieved 8 August 2018.
^Miller, Mervyn (2015). English Garden Cities: An introduction. Historic England. p. 56. ISBN 9781848023208.