* {{Cite book|last= Smith|first= William George |authorlink= |coauthors= |title= -{A Dictionary of Christian antiquities}-|year= 1875|url= http://books.google.com/books?id=1LIPFk6oFVkC&pg=PA549&lpg=PA549&dq=diaconicum&source=bl&ots=GLLv-aRjBe&sig=lIBelqLa4O603rQmwf9flM2hXys&hl=en&ei=d3ljS7fXPJG4M7i1xO0G&sa=X&oi=book_result&ct=result&resnum=7&ved=0CBwQ6AEwBg#v=onepage&q=diaconicum&f=false|publisher= John Murray |location= |id=|ref=harv}}
