Nugraha, I Made Aditya, 		Luthfiani, Febi, AND 		Was, Yosep Sulistio.
" Improvement of Engine Room Watchkeeping Activity on Zada Hela Liveaboard" <em>Jurnal Ergonomi Indonesia (The Indonesian Journal of Ergonomic)</em> [Online], Volume 9 Number 1 (7 August 2023)