http://www.rogerblench.info/Language/Niger-Congo/VN/Igboid/IgbOP.htm (Publisher version)
http://www.rogerblench.info/Language/Niger-Congo/VN/Igboid/Echie%20Dictionary.pdf (Publisher version)
Blench, R. (2004). A dictionary of Echie, an Igboid language of Southern Nigeria. [Cambridge]: N.A.