Zeller, Eduard, 1814-1908, author
Meridian Books, 1960
Buku Teks
Guthrie, W.K.C., author
Cambridge University Press, 1989
Buku Teks
Windelband, Wilhelm, author
Happer & Brothers, 1901
Buku Teks
Blackson, Thomas A., author
Wiley-Blackwell, 2011
Buku Teks
Windelband, Wilhelm, author
Dover, 1956
Buku Teks