In a research article, references give credit to the work of other researchers and direct the reader to further information on the topic. To be useful, references must be valid, available, and accurate. Peer-reviewed journal articles that are published in a language that is easily read and understood by the author and that are widely available to the public may be considered to be the most valid references. Referenced articles should be accessible with only minor inconveniences for most researchers and interested readers. Ensuring the accuracy of references means checking the authors’ names, article title, journal, year, volume and, perhaps, issue numbers, and first and last page numbers. If the reference is Web-based, the link must be operative at the time the reference is submitted, the full link provided, and the date accessed given. References should be added at the appropriate point in the sentence (ie, after the first mention of the idea), and authors should remember that the use of names in a reference traditionally is used to focus attention on the scientists, rather than the science. Grouped references should be chronological and then alphabetical within years when first cited. It is inexcusable to fail to cite the work of other researchers or to attempt to pass off the ideas of others as one’s own.