Nong, Dang, and Hao Ngu. “The Political and Ideological Guidelines Messages on Macau Postage Stamps During the Period of 1998-2002”. VNUHCM Journal of Social Sciences and Humanities 8, no. 3 (September 30, 2024): 2572-2582. Accessed April 6, 2026. https://ssh.vnuhcmjournal.com.vn/index.php/ssh/article/view/980.