Kapinis Referensi
↑ Scopoli, Giovanni Antonio (1777). Introductio ad historiam naturalem 483.↑ Peters, James Lee , ed. (1940). Check-list of Birds of the World Volume 4. Cambridge, Massachusetts: Harvard University Press. hlm. 244. ↑ Linnaeus, C. (1758). Systema Naturæ per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Volume 1 192. Pemeliharaan CS1: Lokasi penerbit (link ) ↑ Gill, Frank ; Donsker, David, ed. (2017). "Owlet-nightjars, treeswifts & swifts" . World Bird List Version 7.2 . International Ornithologists' Union. Diakses tanggal 2 June 2017 .
