The MLA citation style aids writing in the Humanities with its use of parenthetical references as opposed to footnotes. Parenthetical references are brief bibliographic references that are located within the text, as opposed to the bottom of the page or the end of the text, as footnotes or endnotes are. The placement of brief references within the text helps it to remain continuous and complete. The parenthetical references help the reader to concentrate on reading, the activity that provides a basis for work in the Humanities.
The examples below come from the MLA Handbook for Writers of Research Papers, 8th ed. (2016).
Note: The 8th edition shifts away from a listing of style formats for each type of resource, to the elements that might be found in any type of information source, whether it be a book, an article, a Youtube video or social media posting. The writer then builds a citation using those elements with formatting rules from the style guide.
Purdue's OWL has some more information on the changes.