Valenzuela, Vergel, Charita S. Kwan, Abegail R. Responde, Adriel John R. Ilagan, Jonah L. Bondoc, & Elizabeth T. Dom-ogen.
" Initial Assessment of Heavy Metals in Urban  Farming Produce." <em>Science Diliman: A Journal of Pure and Applied Sciences</em> [Online], 34.2 (2022): n. pag. Web.  5 Aug. 2025