Purwanto, P. B. ., M. N. . Zaman, A. I. . P, M. . Akbar, and M. . Arief. “Study of Odonata Diversity in Kerangas Forest Sukadamai Village and Punai Beach Simpang Pesak, Belitung Timur”. Proceeding International Conference on Science and Engineering, vol. 2, Mar. 2019, pp. 133-6, doi:10.14421/icse.v2.71.