International Wittgenstein Symposium Kirchberg am Wechsel, Austria, Österreichische Ludwig Wittgenstein Gesellschaft, ebrary, Inc, Hrachovec, H., & Pichler, A. (2008). Philosophy of the information society: Proceedings of the 30. International Ludwig Wittgenstein Symposium, Kirchberg am Wechsel, Austria 2007. Volume 2. Ontos ; Distributed in North and South America by Transaction Publishers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Wittgenstein Symposium Kirchberg am Wechsel, Austria, Österreichische Ludwig Wittgenstein Gesellschaft, Inc ebrary, Herbert Hrachovec, و Alois Pichler. Philosophy of the Information Society: Proceedings of the 30. International Ludwig Wittgenstein Symposium, Kirchberg Am Wechsel, Austria 2007. Volume 2. Frankfurt : [s.l.]: Ontos ; Distributed in North and South America by Transaction Publishers, 2008.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)International Wittgenstein Symposium Kirchberg am Wechsel, Austria, et al. Philosophy of the Information Society: Proceedings of the 30. International Ludwig Wittgenstein Symposium, Kirchberg Am Wechsel, Austria 2007. Volume 2. Ontos ; Distributed in North and South America by Transaction Publishers, 2008.