The <reference/> line was one thing, but the other was in the below sentence the ending wasn't right so I set it to </ref>. You will need to review it though wasn't 100% on where you wanted the closed source to be :)
<ref>I found the register on Ancestry and no longer have access to actually look at the document> Gertrude Brooks also married Joe Mc Bride on March 31, 1942 in St. Charles Co., MO<Marriage Cert is in my possession>