Krug, A. Z., Jablonski, D., & Valentine, J. W. (2007). Contrarian clade confirms the ubiquity of spatial origination patterns in the production of latitudinal diversity gradients. National Academy of Sciences.
استشهاد بنمط شيكاغوKrug, Andrew Z., David Jablonski, و James W. Valentine. Contrarian Clade Confirms the Ubiquity of Spatial Origination Patterns in the Production of Latitudinal Diversity Gradients. National Academy of Sciences, 2007.
MLA استشهادKrug, Andrew Z., David Jablonski, و James W. Valentine. Contrarian Clade Confirms the Ubiquity of Spatial Origination Patterns in the Production of Latitudinal Diversity Gradients. National Academy of Sciences, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.