Haruo, N., 		Thanh, T., & 		Hoa, T.
(2013).
 Some Difficulties and Suggestions for Sustainable Marine Eco-tourism in Vietnam and Japan: Case Studies of Vân Đồn District, Quảng Ninh Province and Akkeshi Town, Hokkaido.
<em>VNU Journal Of Science: Earth And Environmental Sciences, 29</em>(1).
Retrieved from <a href="https://js.vnu.edu.vn/EES/article/view/1561" target="_new">https://js.vnu.edu.vn/EES/article/view/1561</a>