1. El Espectador. (2018, February 2). Encapuchados asesinan a líder ambientalista en Risaralda [Hooded men assassinate environmentalist leader in Risaralda].
2. Global Witness. (2020, July). Defending tomorrow: The climate crisis and threats against land and environmental defenders.
3. Gonzales, K. (2019, September 5). DENR forest ranger hacked dead in Palawan. Inquirer.net.
4. Jacobs, L. (2019, June 25). Maria del Pilar Hurtado, the victims representative who fled west Colombia only to get murdered in the north. Colombia Reports.
5. Pisa, K. (2017, March 3). Berta no murió; se multiplicó [Berta didn’t die; she multiplied]. CNN.