Teufel, Thomas. "Kant's Non-Teleological Conception of Purposiveness" Kant-Studien, 102.2 (2011): 232-252. Retrieved 19 May. 2013, from doi:10.1515/kant.2011.017

Teufel, T. (2011). Kant's Non-Teleological Conception of Purposiveness. Kant-Studien, 102(2), pp. 145-272. Retrieved 19 May. 2013, from doi:10.1515/kant.2011.017

Teufel, Thomas. 2011. Kant's Non-Teleological Conception of Purposiveness. Kant-Studien. 102(2): 145-272. Retrieved 19 May. 2013, from doi:10.1515/kant.2011.017