^http://www.capetown.gov.za/en/EnvironmentalResourceManagement/publications/Documents/Biodiv_fact_sheet_1_CapeFlatsSandFyn_2010-03.pdf[permanent dead link]
^"Witzands Aquifer Nature Reserve" (PDF). resource.capetown.gov.za. City of Cape Town. 23 October 2019. Retrieved 8 October 2020.