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Cathleen Bester: Smooth Hammerhead (angol nyelven). Florida Museum of Natural History Ichthyology Department, 2014. november 27. [2008. december 4-i dátummal az eredetiből archiválva]. (Hozzáférés: 2014. december 2.)
Cathleen Bester: Smooth Hammerhead (angol nyelven). Florida Museum of Natural History Ichthyology Department, 2014. november 27. [2008. december 4-i dátummal az eredetiből archiválva]. (Hozzáférés: 2014. december 2.)