Sagala, L. P. “Implementation of Adiwiyata ‘Green School’ in Chieving Education for Sustainable Development (Case Study at Forestry Vocational School of Pekanbaru)”. Kaunia: Integration and Interconnection Islam and Science Journal, vol. 15, no. 2, Oct. 2019, pp. 31-35, doi:10.14421/kaunia.1794.