Taufiqurrahman, I., H. Z. Ulya, A. M. Tampubolon, A. Kristanto, and A. Z. Abdullah. “Recent Records of Ruff <em>Philomachus pugnax</em&gt; In Java”. KUKILA, Vol. 17, no. 2, Mar. 2014, pp. 131-5, https://kukila.org/index.php/KKL/article/view/403.