A. Nuanmanee and R. Toopthong, “The Guidelines for Increasing customer of life insurance for the Society of Government Savings Bank in Sakon Nakhon Province: The Guidelines for Increasing customer of life insurance for the Society of Government Savings Bank in Sakon Nakhon Province”, JMSKU, vol. 2, no. 2, pp. 1–14, Dec. 2023.