Original Costa Rican Sign Language
[également appelé Old Costa Rican Sign Language,]Classification : Sign Language
·en danger critique
Classification : Sign Language
·en danger critique
Endangered Languages Catalogue Project. Compiled by research teams at University of Hawai'i Mānoa and Institute for Language Information and Technology (LINGUIST List) at Eastern Michigan University . (2012) ·
Personal Communication on sign languages . James Woodward (2012) ·
Glottolog . http://www.glottolog.org/glottolog/
Lenguas en peligro en Costa Rica: Vitalidad, documentatión y descripción ( pp. 219-250 ) . Carlos Sánchez Avendaño (2013) · Artes y Letras. XXXVII (1) ·