| Brye, Elizabeth; Brye, Edward; Mbongue, Joseph; Engelbert, Domche Teko | Première évaluation globale de la situation sociolinguistique de la langue lefa (ALCAM 581: ləfaʼ) | 1999 | | Language Assessment, Sociolinguistics |
| Ayotte, Michael and Melinda Lamberty | Intelligibility testing of Bafia among Lefa speakers | 2002 | Journal of Language Survey Reports | Language Assessment, Sociolinguistics |
| Mbongué, Joseph, Elizabeth Brye, Edward Brye and Domche Teko Engelbert | Première évaluation globale de la situation sociolinguistique de la langue Lefa (léfaʼ) | 2002 | Journal of Language Survey Reports | Language Assessment, Sociolinguistics |
