Bugenhagen, Salme and Bugenhagen, Robert. 2007. Ro Ta Ipiyooto Sua Mbula Uunu, Mbula-English dictionary. Ukarumpa: Summer Institute of Linguistics, New Guinea Branch.
@book{bugenhagenandbugenhagen2007, address = {Ukarumpa}, author = {Bugenhagen, Salme and Bugenhagen, Robert}, key = {Bugenhagen and Bugenhagen 2007}, publisher = {Summer Institute of Linguistics, New Guinea Branch}, title = {Ro Ta Ipiyooto Sua Mbula Uunu, Mbula-English dictionary}, year = {2007} }