Windelband, Wilhelm, author
Dover, 1956
Buku Teks
Stumpf, Samuel Enoch, 1918-1998, author
McGraw-Hill, 2012
Buku Teks
Fung, Yu-lan, author
Free Press, 1966
Buku Referensi
Hauser, Arnold, author
Routledge & Kegan Paul, 1959
Buku Teks
Mayer, Frederick, author
American Book Company, 1951
Buku Klasik