Gaya APA
Kant, I. (1950).
Prolegomena to any future metaphysics. Introd. by Lewis White Beck. .
New York:
New York Liberal Arts Press.
Gaya MLA
Kant, Immanuel.
"Prolegomena to any future metaphysics. Introd. by Lewis White Beck. ".
New York:
New York Liberal Arts Press,
1950.
Buku.