Yusuf, I.M., Augustini, A. and Ruhimat, R. 2025. DOWNWARD VERTICAL COMMUNICATION IN IMPROVING SERVICE QUALITY AT WISMA BHIMA CAKTI KOPO. Gema Kampus IISIP YAPIS Biak. 20, 1 (Apr. 2025), 11 - 16. DOI:https://doi.org/10.52049/gemakampus.v20i1.457.