| Duke, Daniel | Rapport d'Enquête Sociolinguistique : Première Evaluation Parmi les Mpiemo | 2017 | Journal of Language Survey Reports | Language Assessment, Sociolinguistics |
| Duke, Daniel J. | The History of Writing in Kwasio | 2006 | | Linguistics, Literacy and Education, Missiology |
| Duke, Daniel J. | The Mimicry Game: Motivated Variation in Gyele [CHAGS 11] | 2015 | | Linguistics, Sociolinguistics |
| Beavon, Keith H. | Gyele vowel system | 2012 | | Linguistics |
| Duke, Daniel J. | Écriture et orthographe de la langue baka | 2003 | | Linguistics, Literacy and Education |
| Beavon, Keith H. | Kwasio pronouns | 2012 | | Linguistics |
