ebrary, Inc, & Fultner, B. (2011). Jürgen Habermas: Key concepts. Acumen.
芝加哥风格引文ebrary, Inc, 与 Barbara Fultner. Jürgen Habermas: Key Concepts. Durham, England: Acumen, 2011.
MLA引文ebrary, Inc, 与 Barbara Fultner. Jürgen Habermas: Key Concepts. Acumen, 2011.
警告：这些引文格式不一定是100％准确.