Wikipedia:Tutorial (historical)/Citing sources

This is an encyclopedia, so remember that it's a necessity to include references listing websites, newspapers, articles, books and other sources you have used to write or expand articles. All additions and corrections should be based on reliable, third-party, published sources with a reputation for fact-checking and accuracy. These sources should verify the information, but you must not copy and paste text you find anywhere, except for short quotations. New articles and statements added to existing articles may be deleted by others if unreferenced or referenced poorly or if they are copyright violations.