Ninda Rachmawati (2021) “Ecofarming (Desa Sumbertangkil Kecamatan Tirtoyudo, Kabupaten Malang, Provinsi Jawa Timur.)”, JOURNAL INNOVATION AND COMMUNITY SERVICE, 1(02), hlm. 54–67. Tersedia pada: https://journal.stiekop.ac.id/index.php/ICS/article/view/171 (Diakses: 15 September 2025).