Cita APA (7a ed.)

Walker, M. (1982). Powers of the press: The world's great newspapers. Quartet Books.

Cita Chicago Style (17a ed.)

Walker, Martin. Powers of the Press: The World's Great Newspapers. London: Quartet Books, 1982.

Cita MLA (9a ed.)

Walker, Martin. Powers of the Press: The World's Great Newspapers. Quartet Books, 1982.