Auburn House, 1992. When you place sentences in quotation marks you indicate that the author cited wrote the exact words you have included. Even though the words are synonyms, the citation improperly asserts that Duncan wrote the exact words I cited. If you think the quotation needs to have something added to it to put it in the proper context or if you want to remove something you don't think is relevant to your paper, you may do so. Jobs are a kind of currency.
Private employers give jobs to . . .
If you are unsure what kinds of information people in your field of study know, then it is better to err on the side of caution and cite the source. Any time you use someone else's idea, that source needs to be cited. You may either include a direct quotation or you may paraphrase the idea and cite it. Due to the scarce supply of jobs in Appalachia, those people who can hire people have tremendous power. Neither the sentence structure nor the words are derived from the original quotation.