R. R. P. Negsagis, Z. Zunaidah, M. Widiyanti, and M. Adam, “The influence of motivational placement and work environment on employee performance at PT PLN (Persero) South Sumatra generation main unit”, Int. j. bus. econ. manag. (Lond.), vol. 5, no. 4, pp. 478-487, Dec. 2022.