Oktaria DS. Persepsi Penjaga Perlintasan Kereta Terhadap Shift Jaga Di Masa Pandemi Covid-19 Pada Daop 1 Jakarta. j. manaj. buss. transp. logist. [Internet]. 2021 Jan. 27 [cited 2026 Aug. 9];7(1). Available from: https://journal.itltrisakti.ac.id/index.php/jmbtl/article/view/640