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MIO: Reference Librarian
Your source may have more than one version. Books can have several editions. If your source has an edition number write the number then “ed.” followed by a comma. If the edition has a description include it before the “ed.”
Other media can also have several versions. Write out the description as given in the source followed by a comma.
Note that the description starts with a capital letter when it directly follows the title of the source.
Jewkes, Yvonne. Media and Crime. 2nd ed., Sage, 2011.