User talk:Economics200

March 2019[edit]

Hello, I'm SounderBruce. I noticed that you added or changed content in an article, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so. If you need guidance on referencing, please see the referencing for beginners tutorial, or if you think I made a mistake, you can leave me a message on my talk page. Thank you. Sounder Bruce 04:07, 12 March 2019 (UTC)[reply]

Welcome to Wikipedia. We appreciate your contributions, but in one of your recent edits to Traffic congestion, it appears that you have added original research, which is against Wikipedia's policies. Original research refers to material—such as facts, allegations, ideas, and personal experiences—for which no reliable, published sources exist; it also encompasses combining published sources in a way to imply something that none of them explicitly say. Please be prepared to cite a reliable source for all of your contributions. Thank you. Sounder Bruce 04:37, 16 March 2019 (UTC)[reply]