Library Association Publishing, 1989
Buku Referensi
Ferguson, Wallace K.
Sir Isaac Pitman & Sons, [date of publication not identified]
Buku Teks
Yudha Akbar
2007
Artikel Jurnal
The Goverment Information Office, 2009
Buku Referensi
Wenner-Gren Foundation for anthropological research, 1955
Buku Teks