Implementation of promotion mix in increasing sales at Janji Jiwa Coffee Volume 841. JOGASTO [इंटर्नेट]. 28 फ़रवरी, 2024 [उल्लेखित 24 अगस्त, 2026];2(1):41-50. पर उपलब्ध: https://shmpublisher.com/index.php/jogasto/article/view/264