Saputra, Muhamad Fitra, Budi Setiawan, and Sartika Rini. “Logbook Quality Analysis at PT. Pertamina Patra Niaga Ships Using Sus and Webqual 4.0 Methods”. Jurnal Sosial Teknologi 6, no. 5 (May 19, 2026): 1675–1687. Accessed July 27, 2026. http://sostech.greenvest.co.id/index.php/sostech/article/view/32809.