Fadilah Muhamad I. The relationship between leisure, income, and happiness: Comparing the labor-leisure trade-off and leisure satisfaction theory : DOI: 10.5937/etp2503001F. ETP [Internet]. 2025 Dec. 23 [cited 2026 Mar. 21];18(3):1-14. Available from: https://casopis.fimek.edu.rs/index.php/etp/article/view/356