Παραπομπή σε μορφή APA (7η εκδ.)

Heidegger, M., & Sadler, T. (2002). Towards the definition of philosophy: With a transcript of the lecture-course "On the nature of the university and academic study" (Freiburg lecture-courses 1919). Continuum.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Heidegger, Martin, και Ted Sadler. Towards the Definition of Philosophy: With a Transcript of the Lecture-course "On the Nature of the University and Academic Study" (Freiburg Lecture-courses 1919). London: Continuum, 2002.

Παραπομπή σε μορφή MLA (8th εκδ.)

Heidegger, Martin, και Ted Sadler. Towards the Definition of Philosophy: With a Transcript of the Lecture-course "On the Nature of the University and Academic Study" (Freiburg Lecture-courses 1919). Continuum, 2002.