Coba jelasin . dari Rungkun basa Indo-Arya dalam bahasa sunda dong

Misra, Satya Swarup. (1980). Fresh light on Indo-European classification and chronology. Varanasi: Ashutosh Prakashan Sansthan.

Misra, Satya Swarup. (1991–1993). The Old-Indo-Aryan, a historical & comparative grammar (Vols. 1-2). Varanasi: Ashutosh Prakashan Sansthan.

Sen, Sukumar. (1995). Syntactic studies of Indo-Aryan languages. Tokyo: Institute for the Study of Languages and Foreign Cultures of Asia and Africa, Tokyo University of Foreign Studies.

Vacek, Jaroslav. (1976). The sibilants in Old Indo-Aryan: A contribution to the history of a linguistic area. Prague: Charles University.