==References====Further reading==* Tshewang, Lam Pema (2001)"History of the Has (Ha) Valley" in Journal of Bhutan Studies Volume 5, Winter 2001 p.50-56.
* Satellite map at Maplandia.com* Tshewang, Lam Pema (2001) «"History of the Has (Ha) Valley"» in Journal of Bhutan Studies Volume 5, Winter 2001, p.50-56.