Tabah Subekti, et al. “THE VALUES OF NATIONALISM AND LANGUAGE POLITENESS IN RESEARCH TEXTBOOKS IN MUHAMMADIYAH UNIVERSITIES, CENTRAL JAVA, INDONESIA ”. PalArch’s Journal of Archaeology of Egypt Egyptology, vol. 17, no. 8, Jan. 2021, pp. 855-70, https://archives.palarch.nl/index.php/jae/article/view/5378.