Rahma, Ratih, 		Arifah, Dian, AND 		Ramadhan, Ario.
" The Effectiveness of the Rule of Twenty Method in Reducing the Musculoskeletal Complaints among Educational Staffs" <em>Jurnal Ergonomi Indonesia (The Indonesian Journal of Ergonomic)</em> [Online], Volume 6 Number 2 (30 December 2020)