Paul, E. F., Miller, F. D., & Paul, J. (2004). Freedom of speech. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Paul, Ellen Frankel, Fred Dycus Miller, agus Jeffrey Paul. Freedom of Speech. [Cambridge ; New York: Cambridge University Press, 2004.
Lua MLA (9ú heag.)Paul, Ellen Frankel, et al. Freedom of Speech. Cambridge University Press, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
