S. Kaewsri, A. Tanomtong, P. Supanuam, S. Khunsook, and L.- orsri Sanoamuang, “A Study on the Chromosomes of White-cheeked Gibbon, Nomascus leucogenys (Primate, Hylobatidae) by Conventional Staining Technique”, KKU Sci. J., vol. 41, no. 2, pp. 395–403, Jun. 2013.