M. PaulM.P.LewisM. PaulM.P., Gary F.G.F.SimonsGary F.G.F., Charles D.Ch.D.FennigCharles D.Ch.D. (red.), Maba, [w:] Ethnologue: Languages of the World, wyd. 18, Dallas: SIL International, 2015 [dostęp 2020-06-06] [zarchiwizowane z adresu 2016-10-07](ang.).
W.A.L.W.A.L.StokhofW.A.L.W.A.L., LiaL.Saleh-BronkhorstLiaL., Holle lists: vocabularies in languages of Indonesia. Vol. 2. Sula and Bacan Islands, North Halmahera, South and East Halmahera, Canberra: Department of Linguistics, Research School of Pacific Studies, Australian National University, 1980 (Pacific Linguistics D-28; Materials in languages of Indonesia 2), s. 297–311, DOI: 10.15144/PL-D28, ISBN 0-85883-218-6, OCLC27582893(ang.).
ethnologue.com
M. PaulM.P.LewisM. PaulM.P., Gary F.G.F.SimonsGary F.G.F., Charles D.Ch.D.FennigCharles D.Ch.D. (red.), Maba, [w:] Ethnologue: Languages of the World, wyd. 18, Dallas: SIL International, 2015 [dostęp 2020-06-06] [zarchiwizowane z adresu 2016-10-07](ang.).
W.A.L.W.A.L.StokhofW.A.L.W.A.L., LiaL.Saleh-BronkhorstLiaL., Holle lists: vocabularies in languages of Indonesia. Vol. 2. Sula and Bacan Islands, North Halmahera, South and East Halmahera, Canberra: Department of Linguistics, Research School of Pacific Studies, Australian National University, 1980 (Pacific Linguistics D-28; Materials in languages of Indonesia 2), s. 297–311, DOI: 10.15144/PL-D28, ISBN 0-85883-218-6, OCLC27582893(ang.).