^ Haswell, J. M. (1874) Grammatical Notes and Vocabulary of the Peguan Language: To which are Added a Few Pages of Phrases, &c[1], Rangoon: American Mission Press, page 126
^ Sujaritlak Deepadung (1996) “Mon at Nong Duu, Lamphun Province”, in Mon-Khmer Studies[2], volume 26, page 417 of 411–418