Siebert, F. S. (1965). Freedom of the press in England, 1476-1776 ; the rise and decline of government control. University of Illinois Press.
Lua i Stíl Chicago (17ú heag.)Siebert, Frederick Seaton. Freedom of the Press in England, 1476-1776 ; the Rise and Decline of Government Control. Urbana: University of Illinois Press, 1965.
Lua MLA (9ú heag.)Siebert, Frederick Seaton. Freedom of the Press in England, 1476-1776 ; the Rise and Decline of Government Control. University of Illinois Press, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.