Παραπομπή APA

(1991). Medical career opportunities: The Pfizer Guide. New York: Published by Merritt Communications, Inc.

Παραπομπή Chicago Style

Medical Career Opportunities: The Pfizer Guide. New York: Published by Merritt Communications, Inc, 1991.

Παραπομπή MLA

Medical Career Opportunities: The Pfizer Guide. New York: Published by Merritt Communications, Inc, 1991.

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