Siregar AJ, Ginting P, Harahap R. Marketing Strategy for Domestic and International Tour Packages at PT Let’s Take a Tour. CICoST [Internet]. 2023 Sep. 30 [cited 2026 Jul. 29];1(1):146-50. Available from: https://www.prosiding.politeknikcendana.ac.id/index.php/CICoST/article/view/383