Quynh Trang, Nguyen, and Le Ngoc Thach. “STUDY OF ULAM RAJA OIL (Cosmos Caudatus HBK.)”. Science and Technology Development Journal 11, no. 7 (July 31, 2008): 67-72. Accessed December 22, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/2666.