Poelker, R. J., & Hartwell, H. D. (1973). Black bear of Washington: Its biology, natural history, and relationship to forest regeneration. Washington State Game Dept..
Цитирование в стиле Чикаго (17-е изд.)Poelker, Richard J., и Harry D. Hartwell. Black Bear of Washington: Its Biology, Natural History, and Relationship to Forest Regeneration. Olympia: Washington State Game Dept., 1973.
Цитирование MLA (8-е изд.)Poelker, Richard J., и Harry D. Hartwell. Black Bear of Washington: Its Biology, Natural History, and Relationship to Forest Regeneration. Washington State Game Dept., 1973.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.