Gimba, Alhaji Maina. 2000. Bole Verb Morphology. (Doctoral dissertation, The University of California at Los Angeles).
@phdthesis{bol_gimba2000,
author = {Gimba, Alhaji Maina},
school = {The University of California at Los Angeles},
title = {Bole Verb Morphology},
year = {2000}
}