Which publication date do I use to reference an anniversary edition or reprint of a book?
Answer
Use the publication date of the edition that you are using as your source. Do not include any reprint information. For a special edition, such as an anniversary edition, use the special edition information instead of an edition number.
Example
Covey, S. (2013). The 7 habits of highly effective people: Powerful lessons in personal change (25th Anniversary ed.). Rosetta Books.