- http://researchcommons.waikato.ac.nz/bitstream/handle/10289/2244/thesis.pdf;jsessionid=EC8B7D3C763C5C1183C585D53E88B2DA?sequence=1
- https://eprints.utas.edu.au/22896/7/Johnston_whole_thesis_ex_pub_mat.pdf
- https://reliefweb.int/report/tonga/end-tropical-cyclone-season-2018-2019-tonga-13th-june-2019
- Tino Tonga TCR
- Harold Tonga TCR