| Boyd, Ginger; Roberts, David | La contribution de la graphie tonale à la fluidité de la lecture orale : les cas de l’elip, du mmala et du yangben au Cameroun | 2018 | | Linguistics, Literacy and Education |
| Ubels, Virginia | Testing a primer series | 1986 | Notes on Literacy (online collection) | Literacy and Education |
| Boyd, Ginger; Reeder, JeDene; Roberts, David | Elip, Mmala and Yangben | 2021 | Studies in Written Language and Literacy | Linguistics, Literacy and Education |
| Shell, Olive A | Philosophy and procedure in primer making of SIL, Cameroon, 1981 | 1981 | | Literacy and Education |
| Davis, Dan | The use of pictures in literacy materials: An investigation into the processing of visual information in preliterate societies | 1991 | Notes on Literacy (online collection) | Anthropology, Literacy and Education |
