Mackinnon, John Ramsay, author
Borneo.amsterdam Time Life, 1975
Buku Teks
King, Victor T., author
Blackwell, 1993
Buku Teks
King, Victor T., author
Blackwell, 1993
Buku Teks
Yates, Steve, author
Facts On File, 1992
Buku Referensi
The Hongkong Daily Press, 1930
Buku Referensi