Loewe, Michael
B.T. Batsford, 1968
Buku Teks
Denis Twitchett
Cambridge University Press, 2006
Buku Teks
Vasey, Daniel E.
Iowa State University Press, 1992
Buku Teks
Warrington, John
London Dent 1961
Buku Teks
Mellersh, H.E.L.
Simon & Schuster, 1994
Buku Referensi