Batubara, Zsa Zsa Dwita Sari, et al. “Analysis of the Casual Factors of Musculoskeletal Disorders Complaints in Crane Operator Workers”. JI-KES (Jurnal Ilmu Kesehatan), vol. 7, no. 1, Aug. 2023, pp. 45-53, doi:10.33006/jikes.v7i1.667.