ARUM ROVARTI NINGSIH; PRAMANA, A.; PUTRI, N. N. D.; IHSAN, F.; ENDYRA, F.; MASYITAH, M. Analysis of Added Value Brownies Product Using the Hayami Method (Case Study: Syiaghi MSME in Pekanbaru City). Journal of Engineering Science and Technology Management (JES-TM), [S. l.], v. 6, n. 1, p. 271–280, 2026. DOI: 10.31004/jestm.v6i1.433. Disponível em: https://jes-tm.org/index.php/jestm/article/view/433. Acesso em: 10 jun. 2026.