Nong, D., and H. Ngu. “The Political and Ideological Guidelines Messages on Macau Postage Stamps During the Period of 1998-2002”. VNUHCM Journal of Social Sciences and Humanities, Vol. 8, no. 3, Sept. 2024, p. In press, doi:https://doi.org/10.32508/stdjssh.v8i3.980.