There's a built-in documenter that provides some info on the forms/reports:
   Tools | Analyze | Documenter

Jeff Conrad has a more extensive documenter here:
   http://home.bendbroadband.com/conradsystems/accessjunkie/csdtools.html

If you want to code it (assuming Access 2000 or later), loop through the
AllForms or AllReports collection. This kind of thing:

Public Function ShowRecordSource()
   Dim accobj As AccessObject
   Dim strDoc As String

   For Each accobj In CurrentProject.AllForms
       strDoc = accobj.Name
       If accobj.IsLoaded Then
           Debug.Print strDoc, Forms(strDoc).RecordSource
       Else
           DoCmd.OpenForm strDoc, acDesign, WindowMode:=acHidden
           Debug.Print strDoc, Forms(strDoc).RecordSource
           DoCmd.Close acForm, strDoc
       End If
   Next
End Function