If the original lead author is no longer involved (or is now a secondary author), the new person responsible for the revision will be listed as the first author (for citation purposes) of the revised version. List any previous or intermediate authors as secondary authors or contributors on the back page (or with the indicia). If previous authors are not involved in the latest revision, they may be listed separately as shown below.
Revised by [New Author(s)].
By [Original Author][date].
Example, Reference list:
[New Author(s)]. [Revision Date]. [Title]. [Publisher]. [URL].