Garretson, M. S. (1938). The American bison: The story of its extermination as a wild species and its restoration under federal protection. New York zoological society.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Garretson, Martin S. The American Bison: The Story of Its Extermination as a Wild Species and Its Restoration Under Federal Protection. New York: New York zoological society, 1938.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Garretson, Martin S. The American Bison: The Story of Its Extermination as a Wild Species and Its Restoration Under Federal Protection. New York zoological society, 1938.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.