Scott Feld, ‘Why Your Friends Have More Friends Than You Do', American Journal of Sociology 96: 6, 1991 г.
221
Stephen March, ‘Is Facebook Making Us Lonely?', theatlantic.com, 2 апреля 2012 г.
222
Jeremy Gilbert, ‘Capitalism, Creativity and the Crisis in the Music Industry', opendemocracy.net, 14 сентября 2012 г.
223
Jennifer Scanlon, ‘Mediators in the International Marketplace: US Advertising in Latin America in the Early Twentieth Century', The Business History Review 77: 3, 2003 г.