Rizky Wiradiputra, Sri Umiyati, Sulistiyanto. The Influence of Spirit and Morale of Indonesian Navy Soldiers on Performance in the Amphibious Ship Unit of Koarmada . IJSMR [Internet]. 2024 Dec. 30 [cited 2026 May 9];2(12):1809-30. Available from: https://journal.formosapublisher.org/index.php/ijsmr/article/view/13065