Asher, H. B. (1995). Polling and the public: What every citizen should know (3rd ed.). CQ Press.
Cita Chicago Style (17a ed.)Asher, Herbert B. Polling and the Public: What Every Citizen Should Know. 3rd ed. Washington, D.C.: CQ Press, 1995.
Cita MLA (8a ed.)Asher, Herbert B. Polling and the Public: What Every Citizen Should Know. 3rd ed. CQ Press, 1995.
Precaución: Estas citas no son 100% exactas.