It would be great if Esri would state how credits (citation) should be referenced when using Esri basemaps. The credits on the layout are not very readable and detract from the map. There is not a problem giving credit, but how? Does one reference the contributors page (http://help.arcgis.com/en/communitymaps/pdf/OceanBasemap_Contributors.pdf), the source URL page (http://www.arcgis.com/home/item.html?id=6348e67824504fc9a62976434bf0d8d5), or something else. I think it would be helpful for Esri to provide a formatted citation for bibliographic reference on the source URL page.