Essential Sources

This field should only be completed if it is essential that a particular source, or sources, are referred to in the piece. We only recommend that the sources that are absolutely essential to completing the piece are requested. Our researchers will not take on any piece if they cannot find all the essential sources you list, so asking for essential sources means it is less likely that we will find a researcher for your piece. You may request that a certain number or percentage of the essential sources that you list are referred to, if you wish.