Thi Thuy Trang, Truong, et al. “THE IMPACT OF BIRTH RATE AND DEATH RATE ON POPULATION SIZE AND STRUCTURE: A MIXED-METHOD APPROACH”. HNUE Journal of Science: Journal of Social Sciences, vol. 69, no. 2, May 2024, pp. 122-31, https://doi.org/10.18173/2354-1067.2024-0033.