edited by Ernst Cassirer; Paul Oskar Kristeller; John Herman Randall
University of Chicago Press, 1948
Buku Teks SO
Reichenbach, Hans
University of California Press, 1968
Buku Teks SO
Paine, Thomas
Thomas Paine Foundation, 1950
Buku Teks SO
Ewing, J.H.
Student Outline Co. , 1960
Buku Teks
Thibault, Paul J.
Routledge, 1997
Buku Teks