Acleto O., César. “Additions to the Freshwater Algae Barranco Cascades”. Revista Peruana de Biología 1, no. 2 (December 30, 1974): 087–98. Accessed July 17, 2024. https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/8409.