Ranny Fitria Puspitasari, Aulia Ramadhani, and Sopiah, “EMPLOYEE MOTIVATION IN THE VUCA ERA (VOLATILITY, UNCERTAINTY, COMPLEXITY, AMBIGUITY): A SYSTEMATIC REVIEW OF DETERMINING FACTORS AND ORGANIZATIONAL STRATEGIES”, MORFAI, vol. 5, no. 4, pp. 7052–7061, Oct. 2025.