Keith, R. G. (1999). Presidential address 1998. Advocacy — answering old mail. Canadian Medical Association.
استشهاد بنمط شيكاغوKeith, Roger G. Presidential Address 1998. Advocacy — Answering Old Mail. Canadian Medical Association, 1999.
MLA استشهادKeith, Roger G. Presidential Address 1998. Advocacy — Answering Old Mail. Canadian Medical Association, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.