"Profil National du Tchad sur la gestion des produits chimiques, Troisieme Edition" [National Profile of Chad on Chemicals Management, Third Edition]. ESTIS.net (in French). Republique du Tchad - Ministere de l'Environnement et des Ressources Halieutiques [Republic of Chad - Ministry of Environment and Water Resources]. September 2009. Archived from the original on 1 March 2014.
