APA引文

ebrary, Inc, & Newport, F. (2010). The Gallup Poll: Public opinion 2009. Rowman & Littlefield.

Chicago Style (17th ed.) Citation

ebrary, Inc, and Frank Newport. The Gallup Poll: Public Opinion 2009. Ladnham: Rowman & Littlefield, 2010.

MLA引文

ebrary, Inc, and Frank Newport. The Gallup Poll: Public Opinion 2009. Rowman & Littlefield, 2010.