↑ Thê ́Anh Nguyêñ, Alain Forest Guerre et paix en Asie du Sud-Est Page 110 1998 " ... the regional way of speaking in the southern part of Thanh Nghệ, the so-called Nghệ Tĩnh (Nghệ An and Hà Tĩnh) dialect, ..."
↑ Jonathan D. London Education in Vietnam 2011 Page 186 "A teacher from Hà Tĩnh Province acknowledged this issue, quipping that his distinctive and “heavy” Hà Tĩnh accent would be tough even for most Việt teachers, let alone students."
