Callaghan, K., & Schnell, F. (2005). Framing American politics. University of Pittsburgh Press.
芝加哥风格引文Callaghan, Karen, 与 Frauke Schnell. Framing American Politics. Pittsburgh, Pennsylvania: University of Pittsburgh Press, 2005.
MLA引文Callaghan, Karen, 与 Frauke Schnell. Framing American Politics. University of Pittsburgh Press, 2005.
警告：这些引文格式不一定是100％准确.