PENGARUH KOMUNIKASI TERHADAP PRODUKTIVITAS KERJA DI PT. GLOBAL TEKNOMEDIKA MANDIRI PEKANBARU. indeks [Internet]. 2024 Aug. 29 [cited 2025 Nov. 9];1(1):56-64. Available from: https://ejournal.merakkhatulistiwa.com/index.php/indeks/article/view/7