Delair Publishing Company, 1981
Buku Referensi
Shau, Wing Chan, author
Stanford University Press, 1946
Buku Referensi
Mansion, J.E., author
London Harrap 1972-1980
Buku Referensi
Berlin Hodder and Stoughton 1966
Buku Referensi
Funk & Wagnalls, 1983
Buku Referensi