Quoting means using the exact words from a source in your own work. Use a quotation when the wording itself matters to the point you are making.
Because the words are not your own, make clear where the quotation begins and ends, copy it accurately and cite the source. Quotations should support your explanation, analysis or argument rather than replace it.
This guide explains the writing choices involved in quoting. The precise presentation, citation and pinpoint requirements depend on your referencing style. For the wider process of using evidence in your work, see Integrating information from sources.