Booklet or leaflet (8)
I believe the answer is:
pamphlet
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">booklet</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that booklet can be written as pamphlet)</span><br/ ><br/ >'<span class="explanation-format__original">leaflet</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that leaflet can be written as pamphlet)</span><br/ ><br/ ></span>
(Other definitions for pamphlet that I've seen before include "Brief publication" , "Leaflet containing information" , "Small booklet of information" , "Tract" , "source of information" .)