Proceedings of the National Academy of Sciences of United States of America. National Academy of Sciences of United States of America.
استشهاد بنمط شيكاغوProceedings of the National Academy of Sciences of United States of America. USA: National Academy of Sciences of United States of America.
MLA استشهادProceedings of the National Academy of Sciences of United States of America. National Academy of Sciences of United States of America.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.