I have been doing cut and paste for the citation of the sources I use a lot, it makes it a lot easier for me to provide more information in the source area below the biography section of the profile. Also it is a way to link to online copies of the books. It has been very useful for me. It is all relatively new and I would like to see it organized in a useful way and getting to it more obvious, hence the tab suggestion. There are sources you have to poke around to find. Maybe people that know where all the good sources are already don't need it, but I think it is great. Organization and access are both key. There could be a high level where the general Sources description could have links that get to primary sources for regions. Also links the secondary source pages, (surname, family histories, and regional...)