APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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