Hi Nola,
You can check customer source or partners source before upgrade to GP 2013. Hope you have checked System Requirements for Microsoft Dynamics GP 2013 before upgrade. There is no additional sp's is require to update above mentioned module. Here is the link from customer source
mbs.microsoft.com/.../mdgp2013_patchreleases.htm
or
mbs.microsoft.com/.../MDGP2013_Release_Download
also you can check Microsoft Dynamics GP 2013 Upgrade Guide
Regards,
Santosh