Oso polar Obras ilustradas (Materias-Términos)

Ovsyanikov, N. Polar bears, 1996: CIP galley (polar bear, Ursus maritimus)

Mam. sp. world, c1993: p. 339 (Ursus maritimus; syn.: eogroenlandicus Knotterus-Meyer, groenlandicu Birula, jenaensis Knotterus-Meyer, labradorensis Knotterus-Meyer, marinus Pallas, polaris Shaw, spitzbergensis Knotterus-Meyer, ungavensis Knotterus-Meyer)

Walker mam. world, 1991: p. 1086 (Ursus maritimus, polar bear)

Web. 3 (polar bear; Thalarctos maritimus or Ursus maritimus)