Thanan Čhanthrupant, and Chātchāi Phromčhakkarin. Photčhanānukrom Khamen (Surin)-Thai-Angkrit = Khmer (Surin)-Thai-English Dictionary. [Bangkok, Thailand]: Indigenous Languages of Thailand Research project, Chulalongkorn University Language Institute, 1978.
Suwilai Prēmsīrat, and Sōphanā Sīčhampā. Kānphatthanā rabop kānkhīan Phāsā Khamēn Thin Thai Khrōngkān Phatthanā Phāsā Phư̄nbān phư̄a ʻAnurak Sinlapawatthanatham Phư̄nbān læ Phalit Sư̄ Tāng Tāng = Formulating Thai-based northern Khmer orthography: for the recording and preservation of local culture and for the producing of educational materials. [Bangkok]: Sathāban Wičhai Phāsā læ Watthanatham phư̄a Phatthanā Chonnabot, Mahāwitthayālai Mahidon, 1990. ISBN 9745868302
