Saputra MF, Setiawan B, Rini S. Logbook Quality Analysis at PT. Pertamina Patra Niaga Ships Using Sus and Webqual 4.0 Methods. Jurnal sostech [Internet]. 2026 May 19 [cited 2026 Jul. 27];6(5):1675-87. Available from: http://sostech.greenvest.co.id/index.php/sostech/article/view/32809