SON, Nguyen Lan Hung; 						DUNG, Le Trung; 						VAN, Nguyen Thanh.
 Developing bird watching ecotourism combined with education and natural conservation.
<strong>VNU Journal of Science: Earth and Environmental Sciences</strong>, [S.l.], v. 27, n. 2, june 2011.
ISSN 2588-1094.
Available at: &lt;<a href="https://js.vnu.edu.vn/EES/article/view/1504" target="_new">https://js.vnu.edu.vn/EES/article/view/1504</a>&gt;. Date accessed: 05 may 2024.