Relawati, Rahayu, 		Iriany, Aniek, 		Prihartini, Indah, AND 		Ramli, Mona Fairuz.
" Farmers’ Willingness to Pay Bio-Activators to Maintain Soil Fertility" <em>SOCA: Jurnal Sosial Ekonomi Pertanian</em> [Online], Volume 16 Number 3 (22 November 2022)