6. Khan Academy. (2022, 16 agosto). Natural resources | Earth and society | Middle school Earth and space science | Khan Academy [Vídeo]. YouTube. https://www.youtube.com/watch?v=sIM0PGv8h08
7. The Digital Classroom Experience. (2024, 26 abril). Introduction to Natural Resources Around the World: Use and Sustainability [Vídeo]. YouTube. https://www.youtube.com/watch?v=IEVLIllDUSw