1. D. R. Akbar, “Demineralization of AC Water with Reverse Osmosis Membrane,” Faculty of Engineering. Chemical Engineering, vol. 15, no. 1, pp. 28–33, 2020.
2. A. A. Chairunnisa, “Demineralized Water Production Using Reverse Osmosis (RO) Membrane with the Effect of Discharge and Pressure,” Faculty of Engineering. Chemical Engineering, vol. 15, no. 2, pp. 66–72, 2021.
3. Tarwaka, Ergonomics for Occupational Safety, Health and Productivity”. Surakarta: Surakarta Batik Islamic University. UNIBA PRESS, 2004.
4. H. M. Saputra, “Primary and Combination Factors with Musculoskeletal Disorders in Chicken Farmer Workers in Nagari Mungka “. Bukittinggi: Fort De Kock University Bukittinggi,” Padang Health Ministry of Health Polytechnic, vol. 5, no. 1. Pg, pp. 15–24, 2020.
5. B. Suhardi, Work System Design and Industrial Ergonomics”. Jakarta: Directorate of Vocational High School Development, 2008.