Luhulima, C.P.F., author
Pustaka Pelajar, 2008
Buku Teks
Luhulima, C.P.F., author
Pustaka Pelajar, 2011
Buku Teks
Artikel Jurnal
Mulder, Niels, author
Kanisius, 2005
Buku Teks
Association of Southeast Asian Nations
Directorat General of Information and Publication Communication , 2014
Buku Teks