International Wittgenstein Symposium Kirchberg am Wechsel, Austria, ProQuest (Firm), & Heinrich, R. (2011). Image and imaging in philosophy, science and the arts. Volume 2: Proceedings of the 33rd International Ludwig Wittgenstein Symposium, Kirchberg. Ontos Verlag.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Wittgenstein Symposium Kirchberg am Wechsel, Austria, ProQuest (Firm), و Richard Heinrich. Image and Imaging in Philosophy, Science and the Arts. Volume 2: Proceedings of the 33rd International Ludwig Wittgenstein Symposium, Kirchberg. Frankfurt ; New Brunswick [N.J.]: Ontos Verlag, 2011.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)International Wittgenstein Symposium Kirchberg am Wechsel, Austria, et al. Image and Imaging in Philosophy, Science and the Arts. Volume 2: Proceedings of the 33rd International Ludwig Wittgenstein Symposium, Kirchberg. Ontos Verlag, 2011.