Nguyen, Hiep, and Thinh Pham. “American War of Aggression in Vietnam (1954-1975) and the Beginning of Disputes over the East Sea”. Science and Technology Development Journal 17, no. 2 (June 30, 2014): 5-13. Accessed November 23, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/1321.