Billington, Ray, author
Routledge , 1997
Buku Teks
edited by Ernst Cassirer; Paul Oskar Kristeller; John Herman Randall
University of Chicago Press, 1948
Buku Teks
Reichenbach, Hans, author
University of California Press, 1968
Buku Teks
Ladyman, James, author
Routledge, 2002
Buku Teks
editorial board, Sarvepalli Radhakrishnan ... [et al.]
George Allen and Unwin, 1957
Buku Teks