1. Alcaldía de Panamá, Dónde Reciclar, Basura Cero, Alcaldia De Panama and Basura Cero (2018), basuracero.mupa.gob.pa/donde-reciclar/.
2. Integrating Quantitative and Qualitative Data in Mixed Methods Research–Challenges and Benefits;Almalki;J. Educ. Learn.,2016
3. An emerging source of plastic pollution: Environmental presence of plastic personal protective equipment (PPE) debris related to COVID-19 in a metropolitan city;Ammendolia;Environ. Pollut.,2021
4. Anantakrishnan, L., Exploring Opportunities for Waste Pickers in EPR: SWaCH Cooperative's System for Multi-Layered Packaging (2021) The Global Alliance of Waste Pickers and WIEGO.
5. ANCÓN, Basura Cero – Cambia tu Barrio, reciclar para mejorar la calidad de la ciudad (2019) Retrieved June 11, 2020, from https://ancon.org/reciclaje-ciudad-panama/.