Claesges, U. Intentionality and Transcendence: On the Constitution of Material Nature: Ulrich Claesges. The later Husserl and the idea of phenomenology : idealism - realism, historicity and nature ; papers and debate of the International Phenomenological Conference, held at the University of Waterloo, Canada, April 9 - 14, 1969.(1972).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Claesges, Ulrich. "Intentionality and Transcendence: On the Constitution of Material Nature: Ulrich Claesges." The Later Husserl and the Idea of Phenomenology : Idealism - Realism, Historicity and Nature ; Papers and Debate of the International Phenomenological Conference, Held at the University of Waterloo, Canada, April 9 - 14, 1969.(1972) .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Claesges, Ulrich. "Intentionality and Transcendence: On the Constitution of Material Nature: Ulrich Claesges." The Later Husserl and the Idea of Phenomenology : Idealism - Realism, Historicity and Nature ; Papers and Debate of the International Phenomenological Conference, Held at the University of Waterloo, Canada, April 9 - 14, 1969.(1972), .