Noppawan Thongkham. 2003. The phonology of Kasong at Khlong Saeng Village, Danchumphon Sub-District, Bo Rai District, Trat Province. MA Thesis, Mahidol University, Thailand.
Malone, Dennis L. 2005. Where do we go from here? The challenge and prospects of language revitalization in South East Asia. In Collected papers on language and culture for rural development on the occasion of 60 years celebration for Professor Kunying Suriya Ratanakul and Professor Doctor Suwilai Premsrirat. Institute of Language and Culture for Rural Development, September 2005 p. 202-220.
Malone, Dennis L. and Suwilai Premsrirat. 2005. Language development and language revitalization in Asia. Mon-Khmer Studies: A Journal of Southeast Asian Languages and Cultures 35:101-120.
Janel Swenson, Stephanie Eichentopf, and Jessica Mitchell. 2015. A sociolinguistic study of Gurung in Nepal. SIL International & Linguistic Survey of Nepal, SIL Nepal & Tribhuvan University. http://www.sil.org/resources/archives/62050