Mansor, Z., and D. F. A. Gawin. “Territorial Song in the Oriental Magpie-Robin <em>Copsychus saularis</em&gt; In Suburban Areas of Kota Samarahan, Sarawak”. KUKILA, Vol. 23, no. 1, Jan. 2021, pp. 37-47, http://kukila.org/index.php/KKL/article/view/594.