T. R. Ninsih, E. W. Winarni, and V. Karjiyati, “Pendidikan Karakter Peduli Lingkungan melalui Program ‘Mahira Bebas Sampah’ di SD Alam Mahira Kota Bengkulu”, j. PGSD, vol. 11, no. 1, pp. 73–82, Sep. 2018.