Core Elements: "Each entry in the list of works cited is composed of facts common to most works, the MLA core elements. They are assembled in a specific order" to document a source:
Title of source.
Title of container,
Containers: "When the source being documented forms part of a larger whole, the larger whole can be thought of as a container that holds the source. For example, a short story may be contained in an anthology. The short story is the source, and the anthology is the container." See examples of containers in MLA 8th edition citations.