Fogelin, R. J. (1987). Wittgenstein (2. ed.). Routledge & Kegan Paul.
Chicago Style (17th ed.) CitationFogelin, Robert J. Wittgenstein. 2. ed. London [u.a.]: Routledge & Kegan Paul, 1987.
MLA引文Fogelin, Robert J. Wittgenstein. 2. ed. Routledge & Kegan Paul, 1987.
警告：這些引文格式不一定是100％准確.
