Lerner, Heather R.L.; Mindell, David P. (2005). "Phylogeny of eagles, Old World vultures, and other Accipitridae based on nuclear and mitochondrial DNA". Molecular Phylogenetics and Evolution (dalam bahasa Inggris). 37 (2): 327–346. doi:10.1016/j.ympev.2005.04.010. PMID15925523.
Reading, Richard P.; Bradley, James; Hancock, Peter; Garbett, Rebecca; Selebatso, Moses; Maude, Glyn (2019-01-02). "Home-range size and movement patterns of Hooded Vultures Necrosyrtes monachus in southern Africa". Ostrich. 90 (1): 73–77. doi:10.2989/00306525.2018.1537314. ISSN0030-6525.
Lerner, Heather R.L.; Mindell, David P. (2005). "Phylogeny of eagles, Old World vultures, and other Accipitridae based on nuclear and mitochondrial DNA". Molecular Phylogenetics and Evolution (dalam bahasa Inggris). 37 (2): 327–346. doi:10.1016/j.ympev.2005.04.010. PMID15925523.
worldcat.org
Reading, Richard P.; Bradley, James; Hancock, Peter; Garbett, Rebecca; Selebatso, Moses; Maude, Glyn (2019-01-02). "Home-range size and movement patterns of Hooded Vultures Necrosyrtes monachus in southern Africa". Ostrich. 90 (1): 73–77. doi:10.2989/00306525.2018.1537314. ISSN0030-6525.