P. P. P. . . Silatejo (Phonsing), P. . . Saengsai, and C. . chamroensan, “LEARNING MANAGEMENT IN LEARNING AREAS OF SOCIAL STUDIES RELIGION AND CULTURE FOR LEARNER’S VOLUNTEER SPIRIT DEVELOPMENT IN THE UPPER SCHOOL STUDENTS OF ANUKOONNAREE SCHOOL KALASIN PROVINCE”, JBER, vol. 6, no. 1, pp. 242–255, Jun. 2020.