Lessler, J., Kaufman, J. H., Ford, D. A., & Douglas, J. V. (2009). The Cost of Simplifying Air Travel When Modeling Disease Spread. Public Library of Science.
استشهاد بنمط شيكاغوLessler, Justin, James H. Kaufman, Daniel A. Ford, و Judith V. Douglas. The Cost of Simplifying Air Travel When Modeling Disease Spread. Public Library of Science, 2009.
MLA استشهادLessler, Justin, James H. Kaufman, Daniel A. Ford, و Judith V. Douglas. The Cost of Simplifying Air Travel When Modeling Disease Spread. Public Library of Science, 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.