Below are the resources referred to or cited by the developer(s) of the original unit:
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Jim, C Y and Wong, F Y (2006) 'An evaluation of the country parks system in Hong Kong since its establishment in 1976', chapter 4 in Jim, C Y and Corlett, R T (2006) Sustainable Management of Protected Areas for Future Generations, IUCN, WCPA, FOCP, Hong Kong.
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Stokes, E (2007) Sai Kung Islands, FOCP.
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