Walsh, William S.
Philadelphia, J.B. Lippincott
Buku Referensi
Dubois, Abbe J.A.
The Clarendon Press, 1897
Buku Teks
Kightly, Charles
Thames and Hudson, 1986
Buku Referensi
Tun, Li-Chen
Buku Teks
R.M. Moerdowo
Yogyakarta: Kanisius, 1973,
Buku Referensi