Walker, M. (1982). Powers of the press: The world's great newspapers. Quartet Books.
Chicago Style aipamenaWalker, Martin. Powers of the Press: The World's Great Newspapers. London: Quartet Books, 1982.
MLA aipamenaWalker, Martin. Powers of the Press: The World's Great Newspapers. Quartet Books, 1982.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.