Hill, F. E., & Williams, W. (1941). Radio's listening groups: The United States and Great Britain. Columbia University Press.
Chicago-Zitierstil (17. Ausg.)Hill, Frank Ernest, und W.E Williams. Radio's Listening Groups: The United States and Great Britain. New York: Columbia University Press, 1941.
MLA-Zitierstil (8. Ausg.)Hill, Frank Ernest, und W.E Williams. Radio's Listening Groups: The United States and Great Britain. Columbia University Press, 1941.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.