APA-čujuhus (7. p.)
ebrary, Inc, & Powers, E. (2011). Freedom of speech: The history of an idea. Bucknell University Press.
Chicago-čujuhus (17. p.)
ebrary, Inc, juo Elizabeth Powers. Freedom of Speech: The History of an Idea. Lewisburg [Pa.]: Bucknell University Press, 2011.
MLA-čujuhus (9. p.)
ebrary, Inc, juo Elizabeth Powers. Freedom of Speech: The History of an Idea. Bucknell University Press, 2011.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.