A bibliography is a list of all sources used in a work, usually placed at the end, that gives credit to original authors and prevents plagiarism. By citing sources, a researcher shows the path of their exploration, how others' ideas were brought together and developed their own understanding, and that sufficient research was conducted. References should be given for direct quotes, paraphrases, summaries, and any information from sources like websites, TV, art, and more. A bibliography presents sources in alphabetical order and helps the flow of writing.