Lennart Weibull (2013). „What has Happened with the Political Press? Perspectives on the Erosion in Swedish Newspaper Readership“. Rinkinyje: Henrik Oscarsson; Stefan Dahlberg; Lena Wängnerud (red.). Stepping Stones(PDF). Göteburg: University of Gothenburg. Suarchyvuotas originalas(PDF) 2015-01-08. Nuoroda tikrinta 2015-01-08.
Lennart Weibull (2013). „What has Happened with the Political Press? Perspectives on the Erosion in Swedish Newspaper Readership“. Rinkinyje: Henrik Oscarsson; Stefan Dahlberg; Lena Wängnerud (red.). Stepping Stones(PDF). Göteburg: University of Gothenburg. Suarchyvuotas originalas(PDF) 2015-01-08. Nuoroda tikrinta 2015-01-08.
„Swedish mass media“(PDF). Swedish Institute. 2006. Suarchyvuotas originalas(PDF) 2013-09-25. Nuoroda tikrinta 2014-11-18.