Cita APA (7a ed.)

Heidegger, M., & Sadler, T. (2008). Towards the Definition of Philosophy. Bloomsbury Publishing PLC.

Cita Chicago Style (17a ed.)

Heidegger, Martin, y Ted Sadler. Towards the Definition of Philosophy. London: Bloomsbury Publishing PLC, 2008.

Cita MLA (8a ed.)

Heidegger, Martin, y Ted Sadler. Towards the Definition of Philosophy. Bloomsbury Publishing PLC, 2008.