Rofingah R, Zulaeha I, Wagiran W. The Development of Enrichment Book of Writing Negotiation Texts: The 21st Century’s Competencies of Senior High School Students. seloka [Internet]. 21Aug.2020 [cited 21Dec.2024];9(2):192-03. Available from: https://journal.unnes.ac.id/sju/seloka/article/view/40996