found: Morfologi dan sintaksis bahasa Lampung, 1986.
found: Voegelin lang.:p. 178 (Lampung=Api. Southern Sumatra. Note that Lampung is also a variant name for Bakoi, which is a dialect of Lawangan, spoken in Southwest Borneo. Both are in West Indonesian group)
found: Ethnologue(Lampung (Api, Lampong) Southern Sumatra, Entire province of Lampung. Austronesian, Malayo-Polynesian, Sundic, Malayic, Malay) p. 508 (Lampung given as variant of Bakoi dialect of Lawangan language; spoken in Southern Kalimantan)
found: Lang. atlas Pacific area:map 38 (Lampung lang. of the Lampung Group)
