APA stands for the American Psychological Association. You’ll most likely use the APA format if your paper is on a science topic. APA style uses in-text citations that correspond to an entry in a Reference List. Generally, the author-date method is used in APA, where the authors name is followed by the date in the parenthetical citation. While writing a research paper, it is always important to give credit and cite your source, acknowledging ideas and research that you’ve used in your work. Not doing so can be considered plagiarism , possibly leading to a failed grade or loss of a job. APA format is one of the most commonly used citation styles used for this purpose. Here are all of our comprehensive guides on how to cite various sources in APA format.