Aquila, Richard E. "Things in Themselves and Appearances: Intentionality and Reality in Kant" Archiv für Geschichte der Philosophie, 61.3 (2009): 293-308. Retrieved 25 May. 2013, from doi:10.1515/agph.1979.61.3.293

Aquila, R. (2009). Things in Themselves and Appearances: Intentionality and Reality in Kant. Archiv für Geschichte der Philosophie, 61(3), pp. 249-350. Retrieved 25 May. 2013, from doi:10.1515/agph.1979.61.3.293

Aquila, Richard E. 2009. Things in Themselves and Appearances: Intentionality and Reality in Kant. Archiv für Geschichte der Philosophie. 61(3): 249-350. Retrieved 25 May. 2013, from doi:10.1515/agph.1979.61.3.293