Hammond, E. (2007). Should the US and Russia destroy their stocks of smallpox virus? BMJ Publishing Group Ltd.
استشهاد بنمط شيكاغوHammond, Edward. Should the US and Russia Destroy Their Stocks of Smallpox Virus? BMJ Publishing Group Ltd, 2007.
MLA استشهادHammond, Edward. Should the US and Russia Destroy Their Stocks of Smallpox Virus? BMJ Publishing Group Ltd, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.