| Ayotte, Michael and Charlene Ayotte | Rapid appraisal and lexicostatistical analysis survey of Manta | 2002 | Journal of Language Survey Reports | Language Assessment, Sociolinguistics |
| Stalder, Jürg | Sociolinguistic survey among the Xedi - Lamang | 1993 | | Language Assessment, Sociolinguistics |
| Ayotte, Michael and Charlene Ayotte | Rapid appraisal and lexicostatistical analysis surveys of Atong, Ambele, and Menka Widikum-Menka Subdivision Momo Division North West Province | 2002 | Journal of Language Survey Reports | Language Assessment, Sociolinguistics |
