Damayanti, Putu Ayu, Derma Watty Sihombing, and Susi Herawati. 2023. “Impact of The Covid-19 Pandemic on The Effectiveness of Ship Crew Schedule at PT Surf Marine Indonesia”. Greenation International Journal of Tourism and Management 1 (3):353-58. https://doi.org/10.38035/gijtm.v1i3.58.