Greenberg, R. (2001). Kant's theory of a priori knowledge. Pennsylvania State University Press.
Lua i Stíl Chicago (17ú heag.)Greenberg, Robert. Kant's Theory of a Priori Knowledge. University Park, PA: Pennsylvania State University Press, 2001.
Lua MLA (9ú heag.)Greenberg, Robert. Kant's Theory of a Priori Knowledge. Pennsylvania State University Press, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.