(1991). Medical career opportunities: The Pfizer Guide. New York: Published by Merritt Communications, Inc.
استشهاد بنمط شيكاغوMedical Career Opportunities: The Pfizer Guide. New York: Published by Merritt Communications, Inc, 1991.
MLA استشهادMedical Career Opportunities: The Pfizer Guide. New York: Published by Merritt Communications, Inc, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.