Hill, F. E., & Williams, W. (1941). Radio's listening groups: The United States and Great Britain. Columbia University Press.
Chicago Style (17th ed.) CitationHill, Frank Ernest, and W.E Williams. Radio's Listening Groups: The United States and Great Britain. New York: Columbia University Press, 1941.
MLA (8th ed.) CitationHill, Frank Ernest, and W.E Williams. Radio's Listening Groups: The United States and Great Britain. Columbia University Press, 1941.
Warning: These citations may not always be 100% accurate.