We use citations from other sources to add information or facts while presenting them for our own purpose. It helps give credit to the owner of the information and avoid plagiarism. Also, it allows the viewer to look at the original content or code. In R programming, we should make use of citations for using all R packages. If we have used a non-base package, the function automatically creates the citation information. Otherwise, it returns the data carried by the citation file. To cite in R, we just have to add a comma after the R development team in the field where we have to write the name that shows the last name of the author.