| Griffin, Margie | A rapid appraisal survey of Mubako (ALCAM 300 Samba leekɔ) | 1994 | | Language Assessment, Sociolinguistics |
| Bradley, David P.; Bradley, Karen M. | Sso survey report | 1992 | | Language Assessment, Sociolinguistics |
| Regnier, Clark D. | Tivoid survey of the Akwaya Sub-division, Manyu Division, Southwest Province | 1991 | | Language Assessment, Sociolinguistics |
| Bradley, David P. | Tibea survey report | 1992 | | Language Assessment, Sociolinguistics |
| Stalder, Jürg | Sociolinguistic survey among the Nda'nda' | 1990 | | Language Assessment, Sociolinguistics |
| Brye, Elizabeth; Brye, Edward; Swiri, Roseta | A rapid appraisal sociolinguistic language survey of Mundum [ALCAM: 911] | 2002 | | Language Assessment, Sociolinguistics |
| Satre, Scott Alan | Bilan d'une enquête sociolinguistique de fond dans l'aire Ngomba | 1998 | | Language Assessment, Sociolinguistics |
| Lem, Lilian; Brye, Edward | A rapid appraisal sociolinguistic language survey of Ngamambo [ALCAM: 868] | 2002 | | Language Assessment, Sociolinguistics |
| Hasselbring, Sue; Sadembouo, Etienne | A sociolinguistic survey of the Ngemba languages | 1991 | | Language Assessment, Sociolinguistics |
| Seguin, Lawrence M. | A sociolinguistic survey of Buwal (Gadala) (Rapid appraisal) | 1992 | | Language Assessment, Sociolinguistics |
