diff --git a/Lib/gflanguages/data/languages/tuq_Latn.textproto b/Lib/gflanguages/data/languages/tuq_Latn.textproto
index 91277e7f..797a19a2 100644
--- a/Lib/gflanguages/data/languages/tuq_Latn.textproto
+++ b/Lib/gflanguages/data/languages/tuq_Latn.textproto
@@ -8,7 +8,10 @@ region: "NE"
 region: "NG"
 region: "LY"
 exemplar_chars {
-  base: "a A b B c C d D e E ẹ Ẹ ɛ Ɛ ə Ə f F g G h H i I j J k K l L m M n N ŋ Ŋ o O ọ Ọ ɔ Ɔ p P r R s S š Š t T u U v V w W y Y z Z"
-  marks: "◌̣ ◌̌"
-  auxiliary: "q Q x X"
-}
\ No newline at end of file
+  base: "a A ã Ã b B č Č d D e E ê Ê g G h H i I î Î ĩ Ĩ k K l L m M n N ñ Ñ {nj} {NJ} ŋ Ŋ o O ô Ô p P r R s S š Š t T û Û ũ Ũ w W y Y z Z"
+  marks: "◌̂ ◌̃ ◌̌ ◌̣"
+  auxiliary: "q Q x X ẹ Ẹ ɛ Ɛ ə Ə {g̣} {G̣} ŋ Ŋ ọ Ọ ɔ Ɔ"
+}
+source: "Rhonda L. Hartell, Alphabets de langues africaines, 1993, p. 33"
+source: "Arba Tudagaa-ã = L’alphabet toubou = the Teda alphabet = حروف اللغة التباوي, Mosko Hanadii-ĩ - Centre de Culture et Formation de Bardaï, 2016"
+note: "Hartell 1993 references the Le Cœur & Le Cœur 1955 alphabet but the Mosko Hanadii-ĩ alphabet is currently used."