Sources may have second containers. When there is a second Container, the source's main container is within something larger. This is common when using sources from library tools and databases or streaming media services such as Netflix.
Whenever a source has two containers, include both in the works cited entry. You will include the title of the second container as well as any other Core Elements you need to describe it, such as Location.
These examples show where the Second Container fits inside the bigger works cited entry: