Patla, S. M. (1997). Nesting ecology and habitat of the northern goshawk in undisturbed and timber harvest areas on the Targhee National Forest, Greater Yellowstone ecosystem. Idaho State University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Patla, Susan M. Nesting Ecology and Habitat of the Northern Goshawk in Undisturbed and Timber Harvest Areas on the Targhee National Forest, Greater Yellowstone Ecosystem. Idaho: Idaho State University, 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Patla, Susan M. Nesting Ecology and Habitat of the Northern Goshawk in Undisturbed and Timber Harvest Areas on the Targhee National Forest, Greater Yellowstone Ecosystem. Idaho State University, 1997.
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