Bibliography

Bibliography of Vitality:
Zachary Read. 2011. "Number of Speakers of Central Okinawan." In A Guide to Okinawan, JLect. Online: http://www.jlect.com/downloads/Number-of-Central-Okinawan-Speakers.pdf.
Bibliography of Locations:
"Glottolog." Online: http://www.glottolog.org/glottolog/.
Bibliography of Context:
Zachary Read. 2011. "Number of Speakers of Central Okinawan." In A Guide to Okinawan, JLect. Online: http://www.jlect.com/downloads/Number-of-Central-Okinawan-Speakers.pdf.