Communication Effectiveness: A Study at PT. Perkebunan Nusantara V Riau. International Online Journal of Language, Communication, and Humanities (INSANIAH), [S. l.], v. 7, n. 1, p. 1–14, 2024. DOI: 10.47254/6g8g0h60. Disponível em: https://journal.umk.edu.my/index.php/insaniah/article/view/1823. Acesso em: 31 dec. 2025.