Endangered Languages Catalogue Project. Compiled by research teams at University of Hawai'i Mānoa and Institute for Language Information and Technology (LINGUIST List) at Eastern Michigan University . (2012) ·

Recent fieldwork in Ghana: Report on Dompo and a note on Mpre ( pp. 14-15 ) . Roger M. Blench (1999) · Ogmios. 11 http://www.ogmios.org/ogmios/Ogmios_011.pdf

Recovering data on Mpra [=Mpre] a possible language isolate in North-Central Ghana . Roger Blench (2007) · http://www.rogerblench.info/Language%%20data/Niger-Congo/Isolates/Mpra%%20data.pdf