References
The Age & Sydney Morning Herald. (2021, October 20). The history of coal [Video]. YouTube. https://youtu.be/msIQ1XlqvLA
Andrei, M. (2023, March, 7). How coal is formed. ZME Science. https://www.zmescience.com/other/feature-post/how-coal-is-formed/
Australian Government Geoscience Australia. (n.d.). Coal. https://www.ga.gov.au/education/classroom-resources/minerals-energy/australian-energy-facts/coal
Spanner, H. (2022, June 30). How is coal formed? BBC Science Focus. https://www.sciencefocus.com/planet-earth/how-is-coal-formed/