20 கேள்விகள்: திருத்தங்களுக்கு இடையிலான வேறுபாடு

*David Weinstein, ''The Forgotten Network: DuMont and the Birth of American Television'' (Philadelphia: [[Temple University Press]], 2004) {{ISBN |1-59213-245-6}}

*Alex McNeil, ''Total Television'', Fourth edition (New York: [[Penguin Books]], 1980) {{ISBN |0-14-024916-8}}

*Tim Brooks and Earle Marsh, ''The Complete Directory to Prime Time Network TV Shows'', Third edition (New York: [[Ballantine Books]], 1964) {{ISBN |0-345-31864-1}}

*David Schwartz, Steve Ryan and Fred Wostbrock, ''The Encyclopedia of TV Game Shows'', Third edition (New York: [[Checkmark Books]], 1999) {{ISBN |0-8160-3847-3}}