| Crofts, Marjorie | Must tone always be written in a tonal language? | 1976 | The Bible Translator | Linguistics, Literacy and Education |
| Hall, Joan | Os sistemas fonológicos e gráficos xavante e português: Análise contrastiva | 1979 | Ensaios Lingüísticos | Linguistics, Literacy and Education |
| Crofts, Marjorie | Alguns aspectos fonológicos no processo de alfabetização na língua Mundurukú | 1977 | | Linguistics, Literacy and Education |
| Crocker, William H.; Melatti, Júlio César; Kindell, Gloria E.; Popjes, Jack | Ortografia das Línguas Canela, Krahô, Apinayé e Kayapó | 2018 | | Linguistics, Literacy and Education |
| Stout, Mickey | Comparison of 4 Orthographies in Use: Canela/Krahô, Apinayé, Kayapó, and Timbira/Krĩkati | 1974 | | Linguistics, Literacy and Education |
| Dobson, Rose M. | A Ortografia Kayabí | 1978 | | Linguistics, Literacy and Education |
