Smallhorn-West, P. et al. (2020). Tongan socio-environmental spatial layers for marine ecosystem management. Pacific Conservation Biology, online 22 August
Mapstone, B.D. et al. (2007). Mediating effects of sea urchins on interactions among coral, algae and herbivorous fish in the lagoon at Moorea, French Polynesia.. Marine Ecology Progress Series, 332:143-153
Facebook; The Organisation for Economic Co-operation and Development (OECD); World Bank, 'Future of Business Survey 2020 (Albania, Algeria, American Samoa...and 176 more)', 2021