Tolong jelaskan mengenai Lihat pula dari Gallup

Jajak pendapat pria dan wanita paling disukai Gallup

Gallup's List of Most Widely Admired People of the 20th Century

Gallup, George, ed. The Gallup Poll: Public Opinion, 1935-1971 (3 vol 1972), compilation of reports on thousands of Gallup polls.

Gallup, George. Public Opinion in a Democracy (1939),

Gallup, George. The Sophisticated Poll Watcher's Guide (1972)

Moore, David W. The Superpollsters: How They Measure and Manipulate Public Opinion in America (1995)  online edition

Roll, Jr., Charles W. and Albert H. Cantril; Polls: Their Use and Misuse in Politics (1972) online edition