Nicolas Tournadre and Hiroyuki Suzuki, The Tibetic Languages: an introduction to the family of languages derived from Old Tibetan, Collection Diversités des langues, 1151 p. – 17 maps
Nicolas Tournadre and Hiroyuki Suzuki, The Tibetic Languages: an introduction to the family of languages derived from Old Tibetan, Collection Diversités des langues, 1151 p. – 17 maps