edited by Edward Chielens
Greenwood Press, 1986
Buku Referensi
edited by Franz Schurmann and Orville Schell
Penguin Books, 1968
Buku Teks
Butler, E. M.
Beacon Press, 1935
Koleksi Publik
Asia Publishing, 1968
Buku Teks
Pritchard, Earl H.
Urbana University of Illinois 1930
Buku Teks