Both were recently added to translatewiki.
Bole autonym according to the review article
Schuh, Russell G. (October 1996).
"Dymitr Ibriszimow and Alhaji Maina Gimba (ed.):
Bole language and documentation Unit (BOLDU), Report I."
Bulletin of the School of Oriental and African Studies. 59 (3): 620–621.
Karekare autonym according to the book
"Dindeno, asumka waɗo mabo Karai-karai"
Yobe Languages Research Project 2009
https://ucla.app.box.com/s/xvpgk2ecl73nwnjyyo7g80fsr96mtsbz
f54835f163