APA (7th ed.) Citation
Kurten, B. (1964). The Evolution of the polar bear, Ursus maritimus Phipps.
Chicago Style (17th ed.) Citation
Kurten, Bjoern. The Evolution of the Polar Bear, Ursus Maritimus Phipps. Helsinki, 1964.
MLA (9th ed.) Citation
Kurten, Bjoern. The Evolution of the Polar Bear, Ursus Maritimus Phipps. 1964.
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