ebrary, Inc, & Schaber, P. (2004). Normativity and naturalism. ontos.
芝加哥风格引文ebrary, Inc, 与 Peter Schaber. Normativity and Naturalism. Heusenstamm [Germany]: ontos, 2004.
MLA引文ebrary, Inc, 与 Peter Schaber. Normativity and Naturalism. ontos, 2004.
警告：这些引文格式不一定是100％准确.