Weyl, E. G., Frederickson, M. E., Yu, D. W., & Pierce, N. E. (2010). Economic contract theory tests models of mutualism. National Academy of Sciences.
استشهاد بنمط شيكاغوWeyl, E. Glen, Megan E. Frederickson, Douglas W. Yu, و Naomi E. Pierce. Economic Contract Theory Tests Models of Mutualism. National Academy of Sciences, 2010.
MLA استشهادWeyl, E. Glen, Megan E. Frederickson, Douglas W. Yu, و Naomi E. Pierce. Economic Contract Theory Tests Models of Mutualism. National Academy of Sciences, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.