«Determination of Heavy Metals (Pb and Cd) in Guava Pulps (psidium Guajava) Obtained in the City of Cartagena». BISTUA Revista de la Facultad de Ciencias Básicas 17, no. 2 (agosto 5, 2019): 137–143. Accedido octubre 16, 2025. https://ojs.unipamplona.edu.co/index.php/bistua/article/view/242.