NUHA, A. U.; WAFIROTIN, K. Z.; WIJAYANTI, I. Analisis Kelayakan Finansial dan Non Finansial Usaha Pupuk Organik di Teaching Factory SMK 1 Pemda Ponorogo (Kampus 3 Pudak). Surplus: Jurnal Ekonomi dan Bisnis, [S. l.], v. 4, n. 2, p. 1123–1139, 2026. DOI: 10.71456/sur.v4i2.1841. Disponível em: https://yptb.org/index.php/sur/article/view/1841. Acesso em: 8 oct. 2026.