It may consist of a single sheet of paper that is printed on both sides and folded in half , in thirds , or in fourths -LRB- called a leaflet -RRB- , or it may consist of a few pages that are folded in half and stapled at the crease to make a simple book .

It can be made up of a single sheet of paper that is printed on both sides and folded in half , in thirds , or in fourths -LRB- called a leaflet -RRB- .
