EBATA, Yoshio (2001) ‘Nihon no Shakaichirigengogaku notameni’ (For Japanese Socio- geolinguistics), Yamagata Hogen, 33, 1-8.
EBATA, Yoshio (2007) ‘Junen Kankaku Gengochizu o mochiita ‘Gengochizu Nendaigaku’ no hakken.’ (Discovery of ‘Chronological Linguistic Geography‘...
GROOTAERS, W.A. (1976) Nihon no Hogen Chirigaku notameni (For Japanese dialect geography), Tokyo: Heibonsha.
INOUE, Fumio (1985) Kanto Tohoku Hogen no Chiriteki/Nenreiteki Bumpu (SF Glottogram). (Regional and age distribution of Kanto and Tohoku dialects.),...