Directorate-General for Translation (DGT) of the European Commission. LINGUA FRANCA: CHIMERA OR REALITY? // Studies on translation and multilingualism. Архивиран от оригинала на 2020-02-27.
utoronto.ca
tspace.library.utoronto.ca
William J. Samarin, William J. LINGUA FRANCAS OF THE WORLD // Study of the Role of Second Languages in Asia, Africa, and Latin America. 1962. Посетен на 07.10.2019.
web.archive.org
Directorate-General for Translation (DGT) of the European Commission. LINGUA FRANCA: CHIMERA OR REALITY? // Studies on translation and multilingualism. Архивиран от оригинала на 2020-02-27.