CHODIDJAH, S. . The influence of price perception, product quality, and promotion on purchasing decisions for betawi nasi ulam. Jurnal Mantik, [S. l.], v. 10, n. 2, p. 647-657, 2026. DOI: 10.35335/mantik.v10i2.7412. Disponível em: https://iocscience.org/ejournal/index.php/mantik/article/view/7412. Acesso em: 1 sep. 2026.