Eastern and Western bookbinding methods. A: Bookbinding method used in China, Korea, and Japan. Only one side of each page was printed. Pages were folded in half and stacked. The cover was sewn to the stack of pages at the fold. B: Bookbinding method used in Europe. Pages were printed on both sides, folded in half, and stacked. Holes were then punched at the fold. The cover was sewn on afterwards.