The word "reference" is used to describe a mention or allusion to something, such as a source of information, which can be a book, article, or person. It serves as a way to support your statements with credible evidence or to guide readers to further information. In academic and professional contexts, references are essential for validating claims and avoiding plagiarism.
The word "reference" originates from the Latin word "referentia," which means "to bring back" or "to relate." It has evolved through Middle French "référence," indicating a return to something or pointing out a source.