Bowman, Jacob L., Bruce D. Leopold, Francisco J. Vilella, Duane A. Gill, and Harry A. Jacobson. "Attitudes of Landowners toward American Black Bears Compared between Areas of High and Low Bear Populations." Ursus 12 (2001): 153-160.

Bowman, Jacob L., Bruce D. Leopold, Francisco J. Vilella, Duane A. Gill, and Harry A. Jacobson. "Attitudes of Landowners toward American Black Bears Compared between Areas of High and Low Bear Populations." Ursus 12 (2001): 153-160.