The 8th edition of the MLA Handbook aims to provide the principles of referencing using MLA rather than a list of rules to be followed.  It suggests that rather than focussing on the format of a resource, that a series of Core elements and Containers be used to guide the creation of references.

Core elements:

In the works-cited list, Core elements are given in the order show below, with the punctuation as detailed below.  Omit any element from an entry where it isn't relevant.

1. Author.
2. "Title"
3. Title of container,
4. Other contributors,
5. Version,
6. Number,
7. Publisher,
8. Publication date, 
9. Location.

An entry in the works-cited list should always end with a full stop/period.  

Full explanation of each of the elements can be found in the 8th Edition of the MLA handbook, a brief explanation is given below:

1. Author.

The person(s) or organisation responsible for the work.  Follow the Author Rules for MLA when dealing with multiple authors, editors, etc.

2. Title.

The title of the source you are using, eg. chapter title, essay, entry, etc. - the title of the chapter etc. should be given within quotation marks.

3. Title of container,

A container is the item which holds the entry you are using.  So can be anything from a book (which contains a chapter you are referencing), a journal (which contains an article you are referencing), a website, blog, podcast (which contains a page, entry or broadcast article you are referencing) etc..  In the case of a chapter, the title of the container is the title of the book containing the chapter, the title should be given in italics.

4. Other contributors,

You can add details of other people who have a contribution to the source who are not the authors, with a descriptor for their role in the work, e.g. adapted by, edited by, illustrated by, translated by, narrated by, etc.

5. Version,

Where given within a work, this can include such things as revised edition, updated edition, 7th edition, unabridge version, director's cut.  The term edition is normally abbreviated to "ed.".

6. Number,

This is used where there are multiple volumes of a work to provide the details of the volume you have used.  Journals often have volumes and issues/parts.  Volume is abbreviated to "vol." and issues/parts is abbreviated to "no".  Numbers can also be used for television series, and episodes. Whatever source number you are giving ensure that the preceeding term which identifies it is included in your reference.

7. Publisher,

The full name of the publisher(s) of the work.  As well as book publishers, film production companies and distributors, websites, etc. are given here.  Not all sources require that you provide publishers.  Journals, and websites which host a source, but are not involved in its production do not need to list a publisher.

8. Publication date,

Give the details of the publication date of the source you are citing.  Where multiple dates are given for a source, e.g. where you are citing a source you have found online, and an online publication date is given alongside a date the source appeared in print, use the online date, as that is the date of the source you have used.  Some books list the dates of all the previous editions of the book, use only the date of the edition you are referring to.  For online sources, especially webpages which are updated and give the day and month in the date, include the full date.

9. Location

Locations can be a number of different things depending on the format of the source you are citing.  For books, location can be the place of publication, for a chapter in a book or a journal article it can be the specific pages of the chapter/journal article, for online sources it can be a doi (digital object identifier) or URL, for a physical object it can be the collection it comes from, such as the museum it is located in, for a performance, the theatre it was performed in, etc.