: It doesn't appear that you understand our sourcing requirements; extraordinary claims require strong citation, and you've tacked three sources which aren't sufficient to back such a claim on to the end of the sentence, which obfuscates the fact that an extraordinary claim should be cited where it occurs, and in this case, is not cited at all.  Baker (self) cannot make the claim that he was first to do X that is self.  The other source is a site that anyone can write for, open submissions, and the other appears to have no editorial oversight.  A statement of this type needs to be backed by a reliable economic source, not self, not self-submitted cites.  There are similar problems in the rest of this article, but perhaps you can work on understanding Wiki referencing via this one claim first.  It needs an independent, reliable source adequate to back such an extraordinary claim (that he was first), and the "first" is what needs to be cited, not the entire sentence.  Citations belong with the text they're citing.