MLA9 provides expanded guidance on the major changes first introduced in MLA8, including:
the establishment of core elements for simpler citation formatting, including the concept of information containers
the removal of medium type (ex: Print/Web) from citations
the removal of publication location when citing books
changes to the ways that more than two authors/editors are listed
These changes make citing your sources much easier. Now, you just need to identify the basic pieces of a source’s information, realize that there may be more than one way to cite your source, and make your list of sources (Works Cited page) as easy for your reader to use as possible.
MLA9 also includes new sections covering:
citing social media
writing advice
grammar
avoiding plagiarism