This short video from Purdue OWL provides a clear overview of in-text requirements for several types of sources. It also explains why we use in-text citation and the information that should be included parenthetically. Note that it is adhering to MLA8 requirements; this should not worry you. There are no stylistic differences between MLA8 and MLA9--the latter simply provides more guidance on citing current source types such as Tik Tok videos and posts on other social media platforms.