(en) Wink M.,et al. 2004. Phylogenetic Differentiation of the Osprey Pandion haliaetus inferred from nucleotide sequences of the mitochondrial cytochrome b gene. Raptors Worldwide, p 511-516. ISBN 963-86418-1-9. full text. Gearchiveerd op 21 december 2018.
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(en) Wink M.,et al. 2004. Phylogenetic Differentiation of the Osprey Pandion haliaetus inferred from nucleotide sequences of the mitochondrial cytochrome b gene. Raptors Worldwide, p 511-516. ISBN 963-86418-1-9. full text. Gearchiveerd op 21 december 2018.