Purnasari, Nurwulan, Titisari Juwitangtyas, and Iman Sabarisman. 2020. “Household Food Security During Covid-19 Pandemic in Daerah Istimewa Yogyakarta, Indonesia”. Sustinere: Journal of Environment and Sustainability 4 (2):132-43. https://doi.org/10.22515/sustinere.jes.v4i2.118.