MOHD ROZLAN, N. A.; CHE PA, N. F. A Systematic Review: Optimization of Extracts Psidium Guajava L. By Using Ultrasound-Assisted with Soxhlet Extraction in Application of Food Preservation. Progress in Engineering Application and Technology, [S. l.], v. 2, n. 1, p. 12–26, 2021. Disponível em: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/864. Acesso em: 27 jun. 2022.