editor, John DeFrancis
Allen & Unwin, 1997
Buku Referensi
London; Cassell LTD., 1978
Buku Referensi
London, London Longmans
Buku Referensi
Wely, F Prick van, author
London, Cassell
Buku Referensi
Stratmann, Francus Henry
London Oxford University Press 1958
Buku Referensi