Your references are stored in a folder named RPS which is in your documents folder. You can move or copy the reference files just like you move or copy your Word files.
·drag the file to a USB key
·email the file to yourself
·sync the file in the cloud with services like Dropbox, Mozy Stash, or Microsoft Skydrive
You can also create new references files or change where the files are stored on the Settings tab of the APA Ribbon.
All of the above is true for Mac as well but the default location where the references are stored is your application support folder. This can be found under your user name: