In addition to the 9 "core elements," MLA also provides a way to include extra information that may be useful to your reader or provide better context for about the source. These "supplemental elements" include:
If there's another piece of information that you think it is vital that your reader knows, in order for them to understand or retrieve the source, you can insert it where appropriate.
Original Publication Date
Typically, Citation Element 9: Publication Date uses the most recent date of publication/copyright. However, if a source has been republished but the original publication date is relevant to understanding the context of the source, you can include date that original publication date after the title.
City of Publication
It is rarely necessary to include the city of publication. In pre-1900 Europe and United States, however, books were typically associated with the city in which they were printed, rather than with a particular publishing company. It is only necessary to include this information if you are consulting an edition published before 1900.
Access Date
If citing an online work that does not include a publication date and is subject to change--as most online sources are!--include the date of access at the end of the citation. Thus, if your reader is not able to find the webpage--if for example it has been removed, altered, or suffered from URL rot--they will have at least some context regarding when that information existed.
Other Facts About the Source
MLA has a “menu” of 9 citation elements that you may include in your citation.
If you are citing an unfamiliar or confusing type of source, you can refer to the menu to decide which elements are appropriate.
MLA Style is flexible--two people may cite the same source slightly differently without either one breaking MLA rules! What is essential is that your citation is useful to your readers--by looking at your citation, the reader will understand the kind of source used and know where it could be found.
note that items 3-9 may repeat, depending on the particulars of the source
Below, each element is elaborated on, with examples and formatting guidance. With this information, it is possible to cite any source no matter how unusual.
1. Author.
The primary creator of the source.
2. Title of Source.
The name of the book, article, webpage, episode, etc--this is the most important part of your citation entry!
3. Title of Container,
The title of the book, journal, website, or platform that the source is contained in.
4. Other Contributors,
The name of the editor, translator, illustrator, or similar, if the work has contributors in addition to the author/primary creator
5. Version,
The edition of the work, if there are multiple editions or versions.
6. Number,
Volume and issue of a journal, newspaper, or other periodical; the volume of a multi-volume book; the episode number of a tv show or podcast
7. Publisher,
Organization responsible for producing, publishing, or making available the source.
The Modern Language Association of America both wrote and published the MLA Handbook; we only include that information in the publisher field.
Advanced Citation
8. Publication Date,
The publication/copyright date of the edition of the work you are using.
9. Location.
Where to find the source within its container.