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Lee, A. T. K.; Barnard, P. 2015. Endemic birds of the Fynbos biome: a conservation assessment and impacts of climate change. Bird Conservation International 26: 52-68.
Lee, A.; Barnard, P.; Altwegg, R. 2017. Estimating conservation metrics from atlas data: the case of southern African endemic birds. Bird Conservation International early view: DOI: https://doi.org/10.1017/S0959270916000307.
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BirdLife International (2020) Species factsheet: Chaetops frenatus. Downloaded from http://www.birdlife.org on 02/04/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 02/04/2020.