Tucker, W. G. (1908). On the character of the state board examinations and the competency of state medical examining boards. s.n..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Tucker, Willis G. On the Character of the State Board Examinations and the Competency of State Medical Examining Boards. [Albany, N.Y.?: s.n., 1908.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Tucker, Willis G. On the Character of the State Board Examinations and the Competency of State Medical Examining Boards. s.n., 1908.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.