SHAFQAT KHALID; MAHMOOD ASHRAF. Software Testing in the SDLC: A Structured Review of Testing Levels, Principles, and Lifecycle Practices. Machines and Algorithms, [S. l.], v. 5, n. 02, p. 59–77, 2026. DOI: 10.66108/mna.v5i02.99. Disponível em: https://knovell.org/MnA/index.php/ojs/article/view/99. Acesso em: 1 oct. 2026.