Güldemann, Tom (2018). "Historical linguistics and genealogical language classification in Africa". In Güldemann, Tom (ed.). The Languages and Linguistics of Africa. The World of Linguistics series. Vol. 11. Berlin: De Gruyter Mouton. pp. 58–444. doi:10.1515/9783110421668-002. ISBN978-3-11-042606-9. S2CID133888593.
Savà, Graziano; Tosco, Mauro (June 2000). "A sketch of Ongota, a dying language of southwest Ethiopia". Studies in African Linguistics. 29 (2): 59–136. doi:10.32473/sal.v29i2.107366.
maurotosco.net
Savà, Graziano and M. Tosco (2007). Review article of: Harold C. Fleming Ongota: A Decisive Language in African Prehistory. Wiesbaden: Harrassowitz: 2006. In: Aethiopica 10 (2007): 223-232.p. 1. - "Ongota is also mentioned as an isolate (see, for example, Mous 2003)" http://www.maurotosco.net/ewExternalFiles/SAVA%26TOSCO_review_FLEMING_Aethiopica_2007.pdf ||| Mous, Maarten (2003). “Loss of linguistic diversity in Africa”. In: Mark Janse – Sijmen Tol (eds.) Language Death and Language Maintenance: Theoretical, Practical and Descriptive Approaches. Benjamins, Amsterdam: 157–170. p. 164. 5. Isolates - "Ongota is an unclassified language with 8 speakers in southwest Ethiopia shifting to a minority Cushitic language, Ts'amakko (Savä, this volume)." http://citeseerx.ist.psu.edu/viewdoc/download?rep=rep1&type=pdf&doi=10.1.1.218.5996Archived 2018-04-21 at the Wayback Machine
psu.edu
citeseerx.ist.psu.edu
Savà, Graziano and M. Tosco (2007). Review article of: Harold C. Fleming Ongota: A Decisive Language in African Prehistory. Wiesbaden: Harrassowitz: 2006. In: Aethiopica 10 (2007): 223-232.p. 1. - "Ongota is also mentioned as an isolate (see, for example, Mous 2003)" http://www.maurotosco.net/ewExternalFiles/SAVA%26TOSCO_review_FLEMING_Aethiopica_2007.pdf ||| Mous, Maarten (2003). “Loss of linguistic diversity in Africa”. In: Mark Janse – Sijmen Tol (eds.) Language Death and Language Maintenance: Theoretical, Practical and Descriptive Approaches. Benjamins, Amsterdam: 157–170. p. 164. 5. Isolates - "Ongota is an unclassified language with 8 speakers in southwest Ethiopia shifting to a minority Cushitic language, Ts'amakko (Savä, this volume)." http://citeseerx.ist.psu.edu/viewdoc/download?rep=rep1&type=pdf&doi=10.1.1.218.5996Archived 2018-04-21 at the Wayback Machine
semanticscholar.org
api.semanticscholar.org
Güldemann, Tom (2018). "Historical linguistics and genealogical language classification in Africa". In Güldemann, Tom (ed.). The Languages and Linguistics of Africa. The World of Linguistics series. Vol. 11. Berlin: De Gruyter Mouton. pp. 58–444. doi:10.1515/9783110421668-002. ISBN978-3-11-042606-9. S2CID133888593.
Savà, Graziano and M. Tosco (2007). Review article of: Harold C. Fleming Ongota: A Decisive Language in African Prehistory. Wiesbaden: Harrassowitz: 2006. In: Aethiopica 10 (2007): 223-232.p. 1. - "Ongota is also mentioned as an isolate (see, for example, Mous 2003)" http://www.maurotosco.net/ewExternalFiles/SAVA%26TOSCO_review_FLEMING_Aethiopica_2007.pdf ||| Mous, Maarten (2003). “Loss of linguistic diversity in Africa”. In: Mark Janse – Sijmen Tol (eds.) Language Death and Language Maintenance: Theoretical, Practical and Descriptive Approaches. Benjamins, Amsterdam: 157–170. p. 164. 5. Isolates - "Ongota is an unclassified language with 8 speakers in southwest Ethiopia shifting to a minority Cushitic language, Ts'amakko (Savä, this volume)." http://citeseerx.ist.psu.edu/viewdoc/download?rep=rep1&type=pdf&doi=10.1.1.218.5996Archived 2018-04-21 at the Wayback Machine