APA引文

Poelker, R. J., & Hartwell, H. D. (1973). Black bear of Washington: Its biology, natural history, and relationship to forest regeneration. Washington State Game Dept..

Chicago Style (17th ed.) Citation

Poelker, Richard J., and Harry D. Hartwell. Black Bear of Washington: Its Biology, Natural History, and Relationship to Forest Regeneration. Olympia: Washington State Game Dept., 1973.

MLA引文

Poelker, Richard J., and Harry D. Hartwell. Black Bear of Washington: Its Biology, Natural History, and Relationship to Forest Regeneration. Washington State Game Dept., 1973.

警告：這些引文格式不一定是100％准確.