Cita APA (7a ed.)
ebrary, Inc, & Newport, F. (2010). The Gallup Poll: Public opinion 2009. Rowman & Littlefield.
Cita Chicago Style (17a ed.)
ebrary, Inc, y Frank Newport. The Gallup Poll: Public Opinion 2009. Ladnham: Rowman & Littlefield, 2010.
Cita MLA (9a ed.)
ebrary, Inc, y Frank Newport. The Gallup Poll: Public Opinion 2009. Rowman & Littlefield, 2010.
Precaución: Estas citas no son 100% exactas.