Myers, C. S., & Leffingwell, A. (1907). The vivisection problem: A controversy between Charles S. Myers and Albert Leffingwell. Printed for the Vivisection Reform Society.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Myers, Charles S., و Albert Leffingwell. The Vivisection Problem: A Controversy Between Charles S. Myers and Albert Leffingwell. [Philadelphia?]: Printed for the Vivisection Reform Society, 1907.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Myers, Charles S., و Albert Leffingwell. The Vivisection Problem: A Controversy Between Charles S. Myers and Albert Leffingwell. Printed for the Vivisection Reform Society, 1907.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.