C. . Chanprasit, W. . . . . . . . . . . Jongrungrotsakul, T. Kaewthummanukul, and R. . . . . . . . . . . . Indratula, “Working Behaviors and Lifestyle Among Informal Workers: Corn Farmers ”, Nursing Journal CMU, vol. 47, no. 2, pp. 50–63, May 2020.