‘BoB National’. n.d. http://bobnational.net/.
‘Copac (National, Academic and Specialist Library Catalogue)’. n.d. http://copac.ac.uk/.
‘Dogpile (Web Search)’. n.d. http://www.dogpile.com/.
‘DuckDuckGo’. n.d. https://duckduckgo.com/.
Ellis, Markman. 2006. Eighteenth Century Coffee-House Culture. London: Pickering & Chatto.
‘Explore (UCL Library Catalogue)’. n.d. http://www.ucl.ac.uk/library/explore/.
‘Google’. n.d. https://www.google.co.uk.
‘Office for National Statistics (ONS) - ONS’. n.d. http://www.ons.gov.uk/ons/index.html.
‘Phil Bradley: Which Search Engine When?’ n.d. http://www.philb.com/whichengine.htm.
Roseberry, William. 1996. ‘The Rise of Yuppie Coffees and the Reimagination of Class in the United States’. American Anthropologist 98 (4): 762–75. https://doi.org/10.1525/aa.1996.98.4.02a00070.
‘The Coffee Trail with Simon Reeve | BoB National’. n.d. http://bobnational.net/start-session?entityID=https://shib-idp.ucl.ac.uk/shibboleth&target=http://bobnational.net/record/197794/media_id/199575.
‘TRIP Database’. n.d. http://www.tripdatabase.com/search/advanced.
‘Welcome to East View - Social Movements, Elections, Ephemera’. n.d. http://dlib.eastview.com/browse/udb/1590.
