| Popjes, Jack; Popjes, Josephine | Surface structure of Canela grammar | 1972 | | Linguistics |
| Popjes, Jack | Informação primária e secundária em narrativas canela | 1974 | | Linguistics |
| Ham, Patricia; Popjes, Jack | Kraho and Canela Museu Wordlist | 1970 | | Language Assessment, Linguistics |
| Popjes, Jack; Popjes, Josephine | Grammatical Notes [Canela] | 1972 | | Linguistics |
| Popjes, Jack | Primary and secondary information in Canela narrative | 1974 | | Linguistics |
| Crocker, William H.; Melatti, Júlio César; Kindell, Gloria E.; Popjes, Jack | Ortografia das Línguas Canela, Krahô, Apinayé e Kayapó | 2018 | | Linguistics, Literacy and Education |
| Popjes, Jack | LISTA DE VOCÁBULOS [Canela Ramkokamekra] | 1991 | | Language Assessment, Linguistics |
| Stout, Mickey | Comparison of 4 Orthographies in Use: Canela/Krahô, Apinayé, Kayapó, and Timbira/Krĩkati | 1974 | | Linguistics, Literacy and Education |
