C. Talakua and Centhya Victorin Maitimu, “Efektifitas Media Pembelajaran Berbasis Smartphone Untuk Mengembangkan Sikap Peduli Lingkungan Peserta Didik : (The Effectiveness of Smartphone Based Learning Media to Develop Attitudes Caring for Students ’Environmental)”, Biodik , vol. 6, no. 3, Oct. 2020.