Ramandhita Dwi Pranata, Budi Eko Soetjipto, and Ludi Wisnu Wardhana, “A SYSTEMATIC LITERATURE REVIEW ON THE INFLUENCE OF SKILLS, DISCIPLINE, AND MOTIVATION ON EMPLOYEE PERFORMANCE THROUGH REWARD AND PENALTY SCHEMES”, MORFAI, vol. 5, no. 4, pp. 2732–2743, Jul. 2025.