Howell-Skalla, L. A., & Bahr, J. M. (1999). Seasonal Reproduction in the Male Black Bear Ursus Americanusc and Male Polar Bear Ursus Maritimus.
Chicago Style (17th ed.) CitationHowell-Skalla, Lesley Ann, and Janice M. Bahr. Seasonal Reproduction in the Male Black Bear Ursus Americanusc and Male Polar Bear Ursus Maritimus. 1999.
MLA (9th ed.) CitationHowell-Skalla, Lesley Ann, and Janice M. Bahr. Seasonal Reproduction in the Male Black Bear Ursus Americanusc and Male Polar Bear Ursus Maritimus. 1999.
Warning: These citations may not always be 100% accurate.