Tolong jelaskan mengenai Bacaan lanjut dari Bahasa-bahasa Asli Utara dalam bahasa melayu

Howell, S. (1984). Society and cosmos: Chewong of peninsular Malaysia. Singapore: Oxford University Press.

Howell, S. (1982). Chewong myths and legends. Kuala Lumpur: Printed for the Council of the M.B.R.A.S. by Art Printing Works.

Burenhult, N. (2005). A grammar of Jahai. Pacific linguistics, 566. Canberra: Pacific Linguistics. ISBN 0858835541