* In-text citations: Brief references within the body of your text, indicating where you've used specific information from a source. These usually contain the author's last name and the year of publication.
* Bibliography or Works Cited page: A list at the end of your work that provides full bibliographic information for each source cited. This allows readers to easily find and review the original sources.
In short, a reference citation is a system for crediting your sources and allowing others to trace your research.